Helmet law + promote + enforce

Key asks

  • Pass and implement a comprehensive helmet law that mandates the correct use of standard helmets by all motorcycle drivers and passengers, irrespective of age and gender on all public roads in both rural and urban settings, with no exemptions;
  • Conduct sustained and uncorrupt enforcement of the comprehensive helmet law with penalties for non-compliance and promotion warning people of the law, enforcement, and penalties;
  • Implement all three components—a comprehensive law, enforcement, and promotion together—any one by itself cannot work without the other two;
  • Ensure a ready supply of helmets which have been demonstrated to be effective in reducing head injuries and are affordable for all motorcycle riders.

What we mean by it[1]

A law mandating the correct use of helmets by motorcycle drivers and passengers of all ages while riding motorcycles. The law must also require the helmets to meet the safety standard (national or international), i.e., demonstrated to be effective in reducing head injuries for motorcycle riders. The law must be combined with enforcement that applies penalties for non-compliance and promotion that warns people about the law, enforcement, and penalties.

Where we need it

Countries that allow motorcycles on public roads.

Why we need it

To reduce deaths and injuries

Motorcycle helmet law, enforcement, and promotion help countries achieve the Global Plan target

The Global Plan for the Decade of Action for Road Safety 2021–2030 (Global Plan)[2] sets a target to reduce road traffic deaths and injuries by 50% by 2030. Achieving this target requires implementation of evidence-based interventions that are known to reduce road traffic deaths and injuries.  Motorcycle helmet law, combined with enforcement and publicity are one such evidence-based intervention.

Motorcycles are one of the most unsafe forms of transport

Two- and three-wheelers account for 28% of all road traffic fatalities worldwide. South-East Asia and the Western Pacific regions report the highest numbers of two- and three-wheeler fatalities: 43% and 36% respectively. All regions are seeing an increase in motorcyclist fatality rates (Figure 1).[3]

Figure 1: Proportion of motorcyclist deaths by WHO region, comparison between 2013 and 2016[4]
Source: World Health Organization reproduced under Creative Commons Licence CC BY-NC-SA 3.0 IGO

Motorcycles are widely used in many countries for personal and public transport as well as for service delivery. Most low- and middle-income countries have seen a significant increase in the use of motorcycles due to the high cost of other modes of transportation and in response to an increase in traffic congestion in urban areas.[5] However, motorcycle riding remains one of the most unsafe forms of transport.[6]

Unlike car occupants who may have crash protection from airbags and seat belts,  motorcycle users lack crash protection, making them particularly vulnerable to traffic related fatalities and injuries.[7] Motorcycle riders are 27 times more likely to die in a traffic crash than car occupants and are about six times as likely to be injured.[8]

Using a helmet decreases the risk of death and serious injury in a motorcycle crash

Injuries to the head and neck are among the main causes of death and severe injury to two- and three-wheeled vehicle users.[9] A motorcycle helmet reduces the impact of acceleration-deceleration forces to the brain, as well the impact of the direct contact with an object or surface at the moment of a crash.[10]  

Using helmets can decrease the risk of death in a motorcycle crash by 39% and serious injuries by 72%.[11] (Figure 2)  

Figure 2: Summary of systematic review of effectiveness of motorcycle helmets, WHO[12]
Source: World Health Organization
Helmets manufactured to a standard and worn correctly protect motorcycle riders against crash related head and neck injuries

The full benefit of death and serious injury reduction from motorcycle helmet use depends on the amount of face coverage (see different styles in Figure 3) and whether the helmet is appropriately fastened and meets helmet standards. Full-face helmets provide the highest level of protection against crash related head and neck injuries than other types of helmet.[13] Helmets must be fully fastened[14] and follow helmet standards[15] (e.g., UN Regulation No.22, ECE-22[16]) to be effective. A helmet law, enforcement, and publicity must therefore cover all these aspects.

Figure 3 – Different helmet styles[17]
Source: World Health Organization
Motorcycle helmet law, enforcement and promotion increase helmet wearing by motorcycle riders

In places where the helmet law, enforcement and promotion are executed together, helmet wearing rate reaches over 95%.[18] Increased helmet wearing achieved through the three elements of law, enforcement, and promotion decrease fatal and nonfatal injuries. In particular, motorcycle-related head injuries are reduced by as much as 33% and the severity of the injury is reduced.[19],[20]

Motorcycle helmet law that applies to all motorcycle drivers and passengers are more effective

A universal helmet law—that applies to all motorcycle drivers and passengers irrespective of age and gender on all public roads in both rural and urban settings—is much more effective in increasing helmet wearing and reducing fatal and nonfatal motorcycle crash injuries than a law that exempts certain groups or settings.[21]

A helmet law with exemptions is more difficult to enforce, making it less effective than a universal helmet law. For example, if a law exempts helmet wearing based on the age of the rider, it is very difficult for enforcement officers to single out how old a rider is when s/he is riding past on a motorcycle.[22]

The helmet law and standards must also consider the size of children. Children’s helmet wearing rates are often found to be lower than adults’ in some countries.[23] Children not wearing a helmet are more likely to be injured and their injuries more severe than those wearing a helmet in the event of a motorcycle crash.[24] However, currently, the smallest helmet size regulated by standards would approximately fit the head of a five- to seven-year-old child.[25]

Enforcement and promotion together generate greater compliance

A helmet law, no matter how comprehensive, could not have the full effect of correct helmet use without enforcement that effectively applies penalties for noncompliance.[26]

Promotion—that informs motorcycle riders about enforcement of the helmet-wearing law, the penalties for noncompliance, and why helmet wearing is being enforced (i.e., to protect motorcycle riders from head and brain injuries)—generates greater compliance with the law.[27]

Promotion also warns people what is illegal and that they may receive an unattractive penalty for noncompliance. This should be done in advance of enforcement to give motorcycle riders time to purchase the right helmet. This creates a perception of fairness, making the law and enforcement more effective.[28] However, promotion without the law or enforcement will not increase helmet use or reduce deaths and injuries to the same degree.


To implement a Safe System approach

Implementation of a universal law for correctly-worn standard motorcycle helmets, with associated enforcement and promotion, demonstrates the adoption of the Safe System approach

The Safe System approach is a human-centric approach which dictates the design, use and operation of our road transport system to protect the human road users.[29] The human body, without physical protection, is not built to withstand impact forces greater than approximately 30 km/h and the inherent lack of crash protection to motorcycle riders puts them at a higher risk for injuries and deaths and injuries of greater severity.[30] Correct wearing of standard motorcycle helmets protects the heads of riders.


For economic benefits

Motorcycle helmet law, enforcement and promotion reduce costs for government, individuals, and businesses

Motorcycle helmet law, enforcement and promotion together save lives and reduce the severity of crash injuries, thereby reducing economic costs and positively contributing to a country’s economic growth.

The economic costs related to injury and loss of life from traffic crashes include money needed to treat injuries, loss of hours worked, vehicle repair costs, insurance or third-party costs, and costs of congestion from a crash.

Motorcycle helmet law, enforcement and promotion can contribute to increasing GDP

A World Bank study highlighted that halving road crash deaths and injuries could generate additional flows of income, with increases in GDP per capita over 24 years as large as 7.1% in Tanzania, 7.2% in the Philippines, 14% in India, 15% in China, and 22.2% in Thailand.[31]

Successful implementations

Thailand: 41.4% decrease in head injuries and 20.8% decrease in fatalities from helmet law, enforcement, and promotion

In Thailand, a helmet law was enacted nationwide in 1994, legally mandating the wearing of a helmet by motorcycle drivers and passengers. Immediately after enactment, the helmet law was enforced for 90 days in Bangkok, 180 days in 17 provinces, and 360 days in the rest of the country. In Khon Kaen province, the helmet law was widely promoted, and these campaigns continued even after the police began issuing fines. With the combination of helmet law, enforcement, and promotion, helmet wearing in Khon Kaen increased five-fold, head injuries decreased by 41.4%, and deaths decreased by 20.8%.[32]

Italy: 66% decrease in hospital admissions for traumatic brain injury from making the helmet law more comprehensive

In Italy, only motorcycle drivers (not passengers) were legally required to wear helmets and moped drivers over the age of 18 were exempt. In 2000, a much more comprehensive law, requiring the use of helmets by all motorcycle and moped drivers and passengers, irrespective of age, was adopted and combined with enforcement and promotion. Across the country, helmet-wearing rates rose up to 95% in some areas, hospital admissions for traumatic brain injury declined by 66%, and the number of blunt head injuries (epidural haemorrhages) involving motorcycle and moped riders was almost eliminated.[33]

Vietnam: 1,557 lives saved and 2,495 serious injuries prevented in the first year of enacting helmet law, enforcement, and promotion

In 2007, the Vietnamese government enacted, promoted, and implemented a new helmet law mandating all motorcycle drivers and passengers to wear helmets on all roads. National data showed that the combination of helmet law, enforcement, and promotion reduced road traffic deaths by 18% in the first three months and saved around 1,557 lives and prevented 2,495 serious injuries in the first year.[34] According to another analysis, the law prevented 20,609 deaths and 412,175 serious injuries from 2008 to 2013, and by 2013, over 90% of Vietnamese motorcyclists were wearing helmets.[35]

Ha Nam and Ninh Binh provinces, Vietnam: Increased correct helmet use from 34.3/68.9% to 76.9/72.2% from enforcement and promotion of the helmet law*

An observational helmet use study between June 2011 and December 2014 found that correct helmet use increased from 34.3% to 76.9% in Ha Nam and from 68.9% to 72.2% in Ninh Binh. This result was attributed to enforcement and promotion of the law and benefits of correctly wearing standard helmets.[36]

*In principle, wearing a motorcycle helmet reduces the risk and severity of injuries by around 70% and the likelihood of death by up to 40%.[37] Therefore, any increase in the correct helmet use achieved via a comprehensive law with enforcement and associated promotion has death and injury reduction benefits.[38]

How to implement it

The following guidance documents can support governments in the design and implementation of motorcycle helmet law, enforcement, and promotion:

  • Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners developed by the World Health Organization, pages 22-24, in particular, the checklist on page 23.[39]
  • Helmets: a road safety manual for decision-makers and practitioners developed by the World Health Organization, pages 75-108.[40]
  • UN Regulation No. 22, ECE-22, United Nations European Economic Commission, last amended in 2022 for helmet standards.[41]
  • A Guide to the Use of Penalties to Improve Road Safety developed by the Global Road Safety Partnership.[42]

Linkages

Implementing motorcycle helmet law, enforcement, and promotion achieves, supports, and/or promotes the implementation of:

4 recommended actions in the Global Plan

Global Plan

Page 13, box 3, points 1: Vehicle Safety

  • Require high-quality harmonized safety standards for new and used motor vehicles, safety belts, child-restraint systems and motorcycle helmets, including:
    • standards on front and side impact to ensure that occupants are protected in a front and side-impact crash;
    • safety belts and safety belt anchorage for all seats to ensure that safety belts are fitted in vehicles when they are manufactured and assembled;
    • ISOFIX child-restraint anchor points to secure the child-restraint systems attached directly to the frame of the vehicle to prevent misuse;
    • electronic stability control to prevent skidding and loss of control in cases of oversteering or understeering;
    • advanced emergency braking to reduce collisions;
    • pedestrian protection standards to reduce the severity of impact with a motor vehicle;
    • motorcycle helmets certified according to international harmonized standards;
    • anti-lock braking system and daytime running lights for motorcycles;
    • intelligent speed assistance systems to help drivers keep to speed limits;
    • eCall or Accident Emergency Call Systems (AECS) to trigger an emergency response by an in-vehicle sensor.

Page 15, box 4, points 1, 3, 4Safe Road Use

  • “Enact and enforce road safety legislation:
    • Set maximum speed limits considering the type and function of roads.
    • Establish blood alcohol concentration (BAC) limits to prevent impaired driving (drink- and drug-driving) with specific provisions for novice and professional drivers.
    • Mandate the use of protective equipment (safety belts, child restraints and helmets).
    • Restrict the use of handheld electronic devices while driving.
    • Establish a dedicated enforcement agency, provide training and ensure adequate equipment for enforcement activities.
  • Ensure road infrastructure takes account of the needs of all road users and is designed to facilitate safe behaviours, including:
    • clear road signage and road markings that are intuitive;
    • use of roundabouts and traffic calming designs such as speed humps;
    • physical separation of road users including use of protected bicycle lanes and pedestrian only zones.
  • Make use of vehicle safety features and technologies to support safe behaviours, including:
    • automatic safety belts and seat-belt alerts;
    • intelligent speed assistance;
    • technologies to disable texting and or other forms of distraction while driving.“
2 of the Global Road Safety Performance Targets

Global Road Safety Performance Targets

  • Target 2: By 2030, all countries accede to one or more of the core road safety-related UN legal instruments.
  • Target 7: By 2030, increase the proportion of motorcycle riders correctly using standard helmets to close to 100%.
8 statements in the Stockholm Declaration

Stockholm Declaration

Page 3:

  • 3. Call upon Member States to contribute to reducing road traffic deaths by at least 50% from 2020 to 2030 in line with the United Nations High-Level Political Forum on Sustainable Development’s pledge to continue action on the road safety related SDG targets, including 3.6 after 2020, and to set targets to reduce fatalities and serious
    injuries, in line with this commitment, for all groups of road users and especially vulnerable road users such as pedestrians, cyclists and motorcyclists and users of public transport;
  • 4. Call upon Member States and the international community to address the unacceptable burden of road traffic injury on children and young people as a priority, increasing political commitment, by ensuring that the Global Strategy for Women’s, Children’s and Adolescents’ Health delivers necessary action on road safety;
  • 5. Ensure political commitment and responsibility at the highest level and establish regional, national and subnational strategies and action plans for road safety and contributions from different governmental agencies as well as multi-sectoral partnerships to deliver the scale of efforts required at regional, national and sub-national levels to achieve SDG targets, and that these strategies and efforts are transparent and public;
  • 6. Encourage Member States that have not yet done so to consider becoming contracting parties to the United Nations legal instruments on road safety as well as applying, implementing and promoting their provisions or safety regulations, and ensure that legislation and standards for road design and construction, vehicles, and road use are consistent with safe system principles and are enforced;
  • 7. Include road safety and a safe system approach as an integral element of land use, street design, transport system planning and governance, especially for vulnerable road users and in urban areas, by strengthening institutional capacity with regard to road safety laws and law enforcement, vehicle safety, infrastructure improvements, public transport, post-crash care, and data;
  • 9. Encourage and incentivize the development, application and deployment of existing and future technologies and other innovations to improve accessibility and all aspects of road safety from crash prevention to emergency response and trauma care, with special attention given to the safety needs of those road users who are the most vulnerable including pedestrians, cyclists, motorcyclists and users of public transport;

Page 4:

  • 14. Call upon businesses and industries of all sizes and sectors to contribute to the attainment of the road safety related SDGs by applying safe system principles to their entire value chain including internal practices throughout their procurement, production and distribution process, and to include reporting of safety performance in their sustainability reports;
  • 16. Encourage increased investment in road safety, recognizing the high rates of return of road injury prevention projects and programs and the necessity of scaling up activities to meet the road safety related SDGs;
4 recommendations of the Academic Expert Group of the 3rd Ministerial Conference on Global Road Safety

Academic Expert Group of the 3rd Ministerial Conference on Global Road Safety

Recommendation 1: Page 7 and 28: “SUSTAINABLE PRACTICES AND REPORTING: including road safety interventions across sectors as part of SDG contributions.

In order to ensure the sustainability of businesses and enterprises of all sizes, and contribute to achievement of a range of Sustainable Development Goals including those concerning climate, health, and equity, we recommend that these organizations provide annual public sustainability reports including road safety disclosures, and that these organizations require the highest level of road safety according to Safe System principles in their internal practices, in policies concerning the health and safety of their employees, and in the processes and policies of the full range of suppliers, distributors and partners throughout their value chain or production and distribution system.

Recommendation 2: Page 7 and 34: “PROCUREMENT: utilizing the buying power of public and private organizations across their value chains.

In order to achieve the Sustainable Development Goals addressing road safety, health,
climate, equity and education, we recommend that all tiers of government and the private sector prioritize road safety following a Safe System approach in all decisions, including the specification of safety in their procurement of fleet vehicles and transport services, in requirements for safety in road infrastructure investments, and in policies that incentivize safe operation of public transit and commercial vehicles.

Recommendation 4: Page 7 and 41: CHILD AND YOUTH HEALTH: encouraging active mobility by building safer roads and walkways.

In order to protect the lives, security and well-being of children and youth and ensure the education and sustainability of future generations, we recommend that cities, road authorities and citizens examine the routes frequently traveled by children to attend school and for other purposes, identify needs, including changes that encourage active modes such as walking and cycling, and incorporate Safe System principles to eliminate risks along these routes.

Recommendation 9: Page 7 and 59: TECHNOLOGY: bringing the benefits of safer vehicles and infrastructure to lowand middle-income countries.

In order to quickly and equitably realize the potential benefits of emerging technologies to road safety, including, but not limited to, sensory devices, connectivity methods and artificial intelligence, we recommend that corporations and governments incentivize the development, application and deployment of existing and future technologies to improve all aspects of road safety from crash prevention to emergency response and trauma care, with special attention given to the safety needs and social, economic and environmental conditions of low- and middle-income nations.

6 interventions across 2 components in the Save LIVES package

Page 14: Leadership on road safety

“Create an agency to spearhead road safety
Develop and fund a road safety strategy
Evaluate the impact of road safety strategies
Monitor road safety by strengthening data systems
Raise awareness and public support through education and campaigns”

Page 14: Enforcement of traffic laws

Establish and enforce laws at national, local and city levels on:
drinking and driving;
motorcycle helmets;
seat-belts; and
child restraints

11 commitments in A/RES/76/294, the Political Declaration of the High-Level Meeting on Improving Global Road Safety

A/RES/76/294 Political Declaration of the High-Level Meeting on Improving Global Road Safety

Page 3-5:

1. Drive the implementation of the Global Plan for the Decade of Action for Road Safety 2021–2030, which describes key suggested actions to achieve the reduction in road traffic deaths of at least 50 per cent by 2030 and calls for setting national targets to reduce fatalities and serious injuries for all road users with special attention given to the safety needs of those road users who are the most vulnerable to road-related crashes, including pedestrians, cyclists, motorcyclists and users of public transport, taking into account national circumstances, policies and strategies;

2. Develop and implement regional, national and subnational plans that may include road safety targets or other evidence-based indicators where they have been set, and put in place evidence-based implementation processes by adopting a whole-of-government and whole-of-society approach and designating national focal points for road safety with the establishment of their networks in order to facilitate cooperation with the World Health Organization to track progress towards the implementation of the Second Decade of Action for Road Safety 2021–2030;

3. Promote systematic engagement with relevant stakeholders, including from transport, health, education, finance, environmental and infrastructure areas, and encourage Member States to consider becoming contracting parties to the United Nations legal instruments on road safety and, beyond accession, applying, implementing and promoting their provisions or safety regulations;

5. Adopt evidence- and/or science-based good practices for addressing key risk factors, including the non-use of seat belts, child restraints and helmets, medical conditions and medicines that affect safe driving, driving under the influence of alcohol, narcotic drugs and psychotropic and psychoactive substances, inappropriate use of mobile phones and other electronic devices, including texting while driving, speeding, driving in low visibility conditions, driver fatigue, as well as the lack of appropriate infrastructure; and for enforcement efforts, including road policing, coupled with awareness and education initiatives, supported by infrastructure designs that are intuitive and favour compliance with legislation and a robust emergency response and post-crash care system;

6. Ensure that road infrastructure improvements and investments are guided by an integrated road safety approach that, inter alia, takes into account the connections between road safety and eradication of poverty in all its dimensions, physical health, including visual impairment and mental health issues, the achievement of universal health coverage, economic growth, quality education, reducing inequalities within and among countries, gender equality and women’s empowerment, decent work, sustainable cities, environment and climate change, as well as the broader social determinants of road safety and the interdependence between Sustainable Development Goals and targets that are integrated, interlinked and indivisible, and assures minimum safety performance standards for all road users;

10. Deliver evidence-based road safety knowledge and awareness programmes to promote a culture of safety among all road users and to address high-risk behaviours, especially among youth, and the broader road-using community through advocacy, training and education and encourage private sector participation in supplementing national efforts in promoting greater road safety awareness as part of corporate social responsibility;

12. Acknowledge the importance of adequate, predictable, sustainable and timely international financing without conditionalities in complementing the efforts of countries in mobilizing resources domestically, especially in low- and middle-income countries; support the demands of financing in developing countries by leveraging the United Nations Road Safety Fund and other dedicated mechanisms, as appropriate, for promoting safe road transport infrastructure and for supporting the implementation of measures required to meet the voluntary global performance targets, including by supporting the voluntary replenishment of all United Nations system road safety funds and mechanisms;

13. Promote capacity-building, knowledge-sharing, technical support and technology transfer programmes and initiatives on mutually agreed terms in the area of road safety, especially in developing countries, which confront unique challenges and, where possible, the integration of such programmes and initiatives into sustainable development assistance programmes through North-South, South-South and triangular cooperation formats, as well as public-private collaboration;

14. Promote the development, knowledge-sharing and deployment of vehicle automation and new technologies in traffic management using both intelligent transport systems and cooperative intelligent transport systems, in line with national requirements, to improve accessibility and all aspects of road safety while also monitoring, assessing, managing and mitigating challenges associated with rapid technological change and increasing connectivity;

15. Contribute to international and national road safety by encouraging research and improving and harmonizing disaggregated data collection on road safety, including data on road traffic crashes, resulting deaths and injuries, and road infrastructure, including those gathered from regional road safety observatories, to better inform policies and actions; strengthen road safety data capacity, including in low- and middle-income countries, and improve the quality of systematic and consolidated data collection and comparability at the international level for effective and evidence-based policymaking and implementation while taking into account privacy and national security considerations; and request the World Health Organization to continue to monitor and report on progress towards the achievement of the goals of the decade of action;

16. Leverage the full potential of the multilateral system, in particular the World Health Organization, the good offices of the Special Envoy of the Secretary-General for Road Safety, the United Nations regional commissions and relevant United Nations entities, as well as other stakeholders, including the Global Road Safety Partnership, to support Member States with dedicated technical assistance and, upon their request, in applying voluntary global performance targets for road safety when appropriate;


[1] Our definition is based on the following sources:

Turner, B., Job, S., & Mitra, S. (2021). Guide for Road Safety Interventions: Evidence of What Works and What Does Not Work. World Bank, Washington, DC., USA.

World Health Organization, (2006), Helmets: a road safety manual for decision-makers and practitioners. Geneva.

[2]World Health Organization. (2021). Global Plan for the Decade of Action for Road Safety 2021-2030

[3] World Health Organization. (2018). Global status report on road safety 2018. Geneva: World Health Organization                     

[4] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[5] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[6] UNESCAP. (2019). Strategies to Tackle the Issue of Speed for Road Safety in the Asia-Pacific Region: Implementation Framework. UNESCAP, Bangkok.

[7] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[8] World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva

[9] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[10] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[11] World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva

[12] World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva

[13] Chaichan, S., Asawalertsaeng, T., Veerapongtongchai, P., Chattakul, P., Khamsai, S., Pongkulkiat, P., & Sawanyawisuth, K. (2020). Are full-face helmets the most effective in preventing head and neck injury in motorcycle accidents? A meta-analysis. Preventive Medicine Reports, 13;19:101118.

[14] Thai, K.T., McIntosh, A.S., & Pang, T.Y. (2015). Factors affecting motorcycle helmet use: size selection, stability, and position. Traffic injury prevention, 16(3), 276-282.

[15] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva.

[16] United Nations. (2002). Addendum 21: Regulation No. 22. Revision 4.

[17] World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva.

[18] Passmore, J.W., Nguyen, L.H., Nguyen, N.P., & Olivé, J-M. (2010). The formulation and implementation of a national helmet law: a case study from Viet Nam. Bulletin of the World Health Organization, 88 (‎10)‎, 783 – 787.

[19] Lee, J. Mandatory helmet legislation as a policy tool for reducing motorcycle fatalities: pinpointing the efficacy of universal helmet laws. Accident Analysis & Prevention,111, 173-183.

[20] McGwin, G.J. Jr, Whatley, J., Metzger, J., Valent, .F, Barbone, F., & Rue, L.W. (2004). The effect of state motorcycle licensing laws on motorcycle driver mortality rates. The Journal of Trauma: Injury, Infection, and Critical Care 56(2):p 415-419.

[21] Peng, Y., Vaidya, N., Finnie, R., Reynolds, J., Dumitru, C., Njie, G., Elder, R., Ivers, R., Sakashita, C., Shults, R.A., Sleet, D.A., & Compton, R.P. (2017). Community Preventive Services Task Force. Universal Motorcycle Helmet Laws to Reduce Injuries: A Community Guide Systematic Review. American Journal of Preventive Medicine;52(6):820-832.

[22]  World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva.

[23] Lambrosquini, F., González, F., Bottinelli, E., et al. (2017). Study on the Conditions for Children Transport on Motorcycles in Latin America. Fundación Gonzalo Rodríguez.

[24] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva.

[25] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva

[26] World Health Organization. (2017). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners. WHO, Geneva

World Health Organization. (2006). Helmets: a road safety manual for decision-makers and practitioners. WHO, Geneva

[27] Bao, J., Bachani, A.M., Cuong, P., Ngoc Quang, L., Nguyen, N., & Hyder, A. (2017). Trends in motorcycle helmet use in Vietnam: results from a four-year study. Public Health; 144:S39-S44.

[28] Sakashita, C., Fleiter, J.J., Cliff, D., Flieger, M., Harman, B., & Lilley, M. (2021). A Guide to the Use of Penalties to Improve Road Safety. Global Road Safety Partnership, Geneva, Switzerland.

Elliott, B. (2003). Deterrence Theory Revisited, Road Safety Research, Policing and Education Conference – From Research to Action: Conference Proceedings. Sydney: NSW Roads and Traffic Authority.

[29] World Road Association. (2019). The Safe System Approach – Road Safety Manual: A Manual for Practitioners and Decision Makers on Implementing Safe System Infrastructure. 

[30] Chawla, H., Karaca, I., & Savolainen, P.T. (2019). Contrasting Crash- and Non-Crash-Involved Riders: Analysis of Data from the Motorcycle Crash Causation Study. Transportation Research Record, 2673(7), 122–131.

Lam, C., Pai, C-W., Chuang, C-C., Yen, Y-C., Wu, C-C., Yu, S-H., et al. (2019) Rider factors associated with severe injury after a light motorcycle crash: A multicentre study in an emerging economy setting. PLoS ONE 14(6): e0219132.

Waseem, M., Ahmed, A., & Saeed, T.U. (2019). Factors affecting motorcyclists’ injury severities: An empirical assessment using random parameters logit model with heterogeneity in means and variances. Accident Analysis & Prevention;123:12-19.

[31] World Bank. (2017). The High Toll of Traffic Injuries: Unacceptable and Preventable. World Bank.

[32] Ichikawa, M., Chadbunchachai, W., & Marui, E. Effect of the helmet act for motorcyclists in Thailand. Accident; Analysis and Prevention. 2003 Mar;35 (2):183-189. DOI: 10.1016/s0001-4575(01)00102-6. PMID: 12504139.

[33] P. 19, World Health Organization, (2006), Helmets: a road safety manual for decision-makers and practitioners. Geneva.

[34] P. 181-186, Glassman, A., & Temin, M. (2016). Millions Saved New Cases Of Proven Success In Global Health. Brookings Institution Press And Center for Global Development.; Passmore, J.W., Nguyen, L.H., Nguyen, N.P., & Olivé, J-M. (2010). The formulation and implementation of a national helmet law: a case study from Viet Nam. Bull World Health Organ. 88 (10), 783-7.

[35] Asia Injury Prevention Foundation. 2014. Developing an Integrated Campaign to Address Child Helmet Use in Vietnam: A Case Study. New York: Atlantic Philanthropies.

[36] Bao, J., Bachani, A.M., Viet, C.P., Quang, L.N., Nguyen, N., & Hyder, A.A. (2017). Trends in motorcycle helmet use in Vietnam: results from a four-year study. Public Health, 144, S39–S44.

[37] World Health Organization, (2006), Helmets: a road safety manual for decision-makers and practitioners. Geneva.

[38] World Health Organization, (2006), Helmets: a road safety manual for decision-makers and practitioners. Geneva.

Peng, Y., Vaidya, N., Finnie, R., Reynolds, J., Dumitru, C., Njie, G., Elder, R., Ivers, R., Sakashita, C., Shults, R.A., Sleet, D.A., & Compton, R.P. (2017). Universal Motorcycle Helmet Laws to Reduce Injuries: A Community Guide Systematic Review. American Journal of Preventive Medicine, 52(6), 820–832.

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[39] World Health Organization. (2022). Powered two- and three-wheeler safety: a road safety manual for decision-makers and practitioners, 2nd Edition. WHO, Geneva.

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