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Car Accidents

Road Traffic Accidents Increase Dramatically Worldwide

Road traffic accidents – the leading cause of death by injury and the tenth leading cause of all deaths globally – now make up a surprisingly significant portion of the worldwide burden of ill-health. An estimated 1.2 million people are killed in road crashes each year, and as many as 50 million are injured, occupying 30 percent to 70 percent of orthopedic beds in developing countries hospitals.1 And if present trends continue, road traffic injuries are predicted to be the third-leading contributor to the global burden of disease and injury by 2020.2

Developing countries bear a large share of the burden, accounting for 85 percent of annual deaths and 90 percent of the disability-adjusted life years (DALYs) lost because of road traffic injury.3 And since road traffic injuries affect mainly males (73 percent of deaths) and those between 15 and 44 years old, this burden is creating an enormous economic hardship due to the loss of family breadwinners (see Figure 1).

Figure 1
Road Traffic Deaths Worldwide by Sex and Age Group, 2002

Source: WHO Global Burden of Disease Project, Version 1 (2002).

Road traffic injuries are predictable and preventable, but good data are important to understand the ways in which road safety interventions and technology can be successfully transferred from developed countries where they have proven effective. Awareness of the consequences of road traffic injuries is lagging among policymakers and the general public. What’s needed is the incorporation of comprehensive road safety programs into national planning in developing countries.

Profile of the Problem

In developed countries, road traffic death rates have decreased since the 1960s because of successful interventions such as seat belt safety laws, enforcement of speed limits, warnings about the dangers of mixing alcohol consumption with driving, and safer design and use of roads and vehicles. For example, road traffic fatalities declined by 27 percent in the United States, and by 63 percent in Canada from 1975 to 1988. But traffic fatalities increased in developing countries during the same period – by 44 percent in Malaysia and 243 percent in China, for instance.4

More than one-half of all road traffic deaths globally occur among people ages 15 to 44 – their most productive earning years. Moreover, the disability burden for this age group accounts for 60 percent of all DALYs lost because of road traffic accidents.5 The costs and consequences of these losses are significant. Three-quarters of all poor families who lost a member to road traffic death reported a decrease in their standard of living, and 61 percent reported they had to borrow money to cover expenses following their loss.6 The World Bank estimates that road traffic injuries cost 1 percent to 2 percent of the gross national product (GNP) of developing countries, or twice the total amount of development aid received worldwide by developing countries.7

As in developed countries, driver impairment is an important component of road traffic accidents in developing countries. Driving at excess speeds, while under the influence of alcohol or drugs, while sleepy or tired, when visibility is compromised, or without protective gear for all vehicle occupants are major factors in crashes, deaths, and serious injuries.

In general, pedestrians, cyclists, and moped and motorcycle riders are the most vulnerable road users as well as the heaviest users of roads in poor countries. Most people who use public transportation, bicycles, or mopeds and motorcycles or who habitually walk are poor, illuminating the higher risk borne by those from less privilege.8 In Asia, for instance, motorized two- and three-wheelers (such as motorized rickshaws) will make up the anticipated growth in numbers of motor vehicles.9 Figure 2 shows the higher proportion of deaths among these groups in developing countries.10

Figure 2
Proportion of Road Users Killed in Various Modes of Transport As A Percent of All Fatalities, Selected Countries

Motorized vehicles
United States

*Note: Dates for above data vary according to city and country: Thailand, 1987; Malaysia, 1994; and United States, 1995.
Source: Dinish Mohan, “Traffic Safety and Health in Indian Cities,” in Journal of Transport and Infrastructure no. 9 (2002).

Prevention Interventions

The World Bank and the World Health Organization (WHO) advocate a “systems approach” to road traffic safety that emphasizes involvement at all levels of the road traffic system – from road providers and enforcers (vehicle manufacturers, road traffic planners, road safety engineers, police, educators, health professionals, and insurers) to road users. Prevention interventions fall into several broad categories:

Managing risk exposure with land-use. In developing countries, exposure to potential road traffic injury has increased largely because of rapid motorization, coupled with poor road conditions, rapid population growth, lack of safety features in cars, crowded roads, poor road maintenance, and lack of police enforcement. For example, in Vietnam, the number of motorcycles grew by 29 percent in 2001, with an associated increase of 37 percent in the number of road traffic deaths.11

Promoting efficient patterns of land use and providing shorter, safer routes for vulnerable road users can reduce their exposure. Studies in Brazil, Mexico, and Uganda have found that pedestrians would rather cross a dangerous road than go out of their way to take a pedestrian bridge, even though such preferences increased their exposure to injury risk.12

Improving public transportation systems can also reduce exposure. People in cars are between 8 and 20 times less likely to be killed in a road accident than walkers, bicyclists, or motorized two-wheeler users.13

Planning and designing roads for safety. In almost all countries, road networks are designed from the perspective of the motor vehicle user. But developing countries can take lessons from safety-conscious road design in countries such as the Netherlands and Denmark, where roads are built to suit their function (high speed, rural, transitional between high speed and rural, and residential) and account for the safety of pedestrians and cyclists. Studies in Denmark showed that providing segregated bicycle lanes alongside urban roads reduced deaths among cyclists by 35 percent.14

Providing visible, crashworthy, and smart vehicles. Designing motorized vehicles that are more crashworthy is an important intervention in those developing countries where automobile safety regulations are more lax than in developed countries. One study showed that in developing countries, buses and trucks are involved in a much greater proportion of crashes, yet lack relevant safety standards.15

Improving vehicular visibility is also important. In Thailand, hospital records showed that 75 percent to 80 percent of road traffic injuries were among users of motorized two-wheeled vehicles, which are not easily visible to larger vehicle operators. Improving the visibility of drivers in other instances (such as at night or during fog) can reduce injuries. Daytime running lights and high-mounted stop lamps have improved crashes in these cases, as have reflectors and colorful clothing.

New technologies have created other avenues for road safety. These developments include intelligent speed adaptation, in which the vehicle determines the speed limit for the road; alcohol-ignition interlock systems that detect alcohol on the breath of drivers, preventing them from starting their engines; or electronic driver improvement monitors that connect individual driver profile assessments and an individual vehicle operator’s actual driving performance.

Setting road and safety rules, securing compliance, and improving transport policy. Setting and enforcing speed and blood alcohol concentration limits have proven to be perhaps the most successful interventions contributing to the decrease in injury in developed countries. Speed limiting devices on vehicles, limits on engine power, and nonvehicular traffic-calming measures hold the greatest promise in developing countries, according to Dinesh Mohan, professor of biomechanics and transportation safety coordinator with the Transportation Research and Injury Prevention Programme at the Institute of Technology in New Dehli, India.16

Enforcing blood alcohol limits is another opportunity to improve road safety. While it is commonly understood in developed countries that impaired driving is an important contributor to road traffic fatalities and injuries, little is known in these countries about the nature and scope of the problem. One survey of studies found that, in developing countries, blood alcohol was present in 33 percent to 69 percent of fatally injured drivers.17

Because blood alcohol tolerances vary across countries, comparison studies are difficult, and to date, no study has provided the evidence to benchmark the tolerance level at which reductions in accidents can occur in developing countries. David Bishai, an injury prevention expert and associate professor at Johns Hopkins University’s Department of Population and Family Health Sciences, suggests that taxing gasoline and alcohol could lower traffic deaths by causing less driving and less drunk driving in developing countries. But he warns that other measures must be taken and must fit the needs of the local environment.

Finally, although mandatory seat-belt-use laws have reduced traffic injuries in developed countries by 40 percent to 50 percent, such laws must be tailored to the local situation: In developing countries, car occupants constitute less than 10 percent to 20 percent of traffic fatalities.18 These countries also need to improve helmet safety and use among two- and three-wheel vehicle operators as well as to enforce the appropriate number of passengers for these vehicles.

Challenges to Public Health

Although some interventions from developed countries (such as the road-safety design elements in Denmark and the Netherlands) can be applied in developing-country settings, analysts urge caution because interventions are often situation-specific. Interventions need to be applicable to the particular mix of developing country road use – which is dominated by two-wheel vehicles, human-powered vehicles, pedestrians carrying loads, and locally designed vehicles. In addition, the traffic patterns in developing countries (especially in urban areas) are more complex because of high-density living and mixed land use, severe limitation of resources, and the abundance of shantytowns.19


  1. Dinesh Mohan, “Road Safety in Less-Motorized Environments: Future Concerns,” International Journal of Epidemiology 31, No. 3 (2002): 527-32.
  2. Christopher J.L. Murray and Alan D. Lopez, eds., The Global Burden of Disease: A Comprehensive Assessment of Mortality and Disability from Diseases, Injuries, and Risk Factors in 1990 and Projected in 2020 (Boston: Harvard School of Public Health, 1996).
  3. One DALY is roughly equivalent to one healthy year of life lost. For more on the traffic-injury burden, see World Health Organization (WHO) and World Bank, “World Report on Road Traffic Injury Prevention,” accessed online at www.who.int, on Feb. 6, 2006.
  4. Elizabeth Kopits and Maureen Cropper, “Traffic Fatalities and Economic Growth,” The World Bank, Policy Research Working Paper No. 3035 (Washington, DC: World Bank, 2003).
  5. Margie Peden, Kara McGee, and G. Sharma, The Injury Chartbook: A Graphical Overview of the Global Burden of Injuries (Geneva: WHO, 2002).
  6. Babtie Ross Silcok, Guidelines for Estimating the Costs of Road Crashes in Developing Countries. (London: U.K. Department for International Development, 2003).
  7. Margie Peden and Adnan A. Hyder, “Road Traffic Injuries are a Global Public Health Problem,” British Medical Journal 324, no. 7346 (2002): 1153.
  8. One study in Kenya showed that 27 percent of commuters with no formal education traveled on foot, 55 percent used buses or minibuses, and only 8 percent used private cars. By contrast, 81 percent of people with secondary education traveled in private cars, 19 percent used buses, and none walked. See Vinand M. Nantulya and Michael R. Reich, “The Neglected Epidemic: Road Traffic Injuries in Developing Countries,” British Medical Journal 324, no. 7346 (2002): 1139-41.
  9. Dinesh Mohan and Geetam Tiwari, “Traffic Safety in Low Income Countries: Issues and Concerns Regarding Technology Transfer from High-Income Countries,” in Reflections of the Transfer of Traffic Safety Knowledge to Motorising Nations (Melbourne: Global Traffic Safety Trust, 1998): 27-56.
  10. Vinand M. Nantulya et al., “Introduction: The Global Challenge of Road Traffic Injuries: Can We Achieve Equity in Safety?” Injury Control and Safety Promotion 10, no. 1-2 (2003): 3-7.
  11. WHO, Report of the Regional Director to the Regional Committee for the Western Pacific (Manila: WHO, 2003): 96-99.
  12. Martha Hijar et al., “Pedestrian Traffic Injuries in Mexico: A Country Update,” Injury Control and Safety Promotion 10, no. 1-2 (2003): 37-43; S.N. Forjuoh, “Traffic-Related Injury Prevention Interventions for Low-Income Countries,” Injury Control and Safety Promotion 10, no. 1-2 (2003): 109-18; and M. Mutto et al., “The Effect of an Overpass on Pedestrian Injuries on a Major Highway in Kampala, Uganda,” African Health Science 2, no. 3 (2002): 89-93.
  13. WHO, World Report on Road Traffic Injury Prevention.
  14. Lene Herrstedt, “Planning and Safety of Bicycles in Urban Areas,” in Proceedings of the Traffic Safety on Two Continents Conference, Lisbon, Sept. 22-24, 1997 (Linköping: Swedish National Road and Transport Research Institute, 1997): 43-58.
  15. Mohan, “Road Safety in Less-Motorized Environments.”
  16. Mohan, “Road Safety in Less-Motorized Environments.”
  17. Wilson O. Odero and Anthony B. Zwi, “Alcohol-Related Traffic Injuries and Fatalities in LMICs: A Critical Review of Literature,” in Proceedings of the 13th International Conference on Alcohol, Drugs, and Traffic Safety, ed. C.N. Kloeden and A.J. McLean (Adelaide: University of Adelaide, Australia, 1995): 713-20.
  18. Peter Cummings et al., “Association of Driver Air Bags with Driver Fatality: A Matched Cohort Study,” British Medical Journal 324, no. 7346 (2002): 1119-22; and Mohan, “Road Safety in Less-Motorized Environments.”
  19. Mohan, “Road Safety in Less-Motorized Environments.”

Distracted Driving

Each day in the United States, approximately 9 people are killed and more than 1,000 injured in crashes that are reported to involve a distracted driver.1

Distracted driving is driving while doing another activity that takes your attention away from driving. Distracted driving can increase the chance of a motor vehicle crash.

What are the types of distraction?

There are three main types of distraction:

  • Visual: taking your eyes off the road;
  • Manual: taking your hands off the wheel; and
  • Cognitive: taking your mind off of driving.2

Distracted driving activities

Anything that takes your attention away from driving can be a distraction. Sending a text message, talking on a cell phone, using a navigation system, and eating while driving are a few examples of distracted driving. Any of these distractions can endanger the driver and others.

Texting while driving is especially dangerous because it combines all three types of distraction.3 When you send or read a text message, you take your eyes off the road for about 5 seconds, long enough to cover the length a football field while driving at 55 mph.4

How big is the problem?

US deaths

In 2016, 3,450 people were killed in crashes involving a distracted driver.1

US injuries

In 2015, 391,000 people were injured in motor vehicle crashes involving a distracted driver.1

2010 2011 2012 2013 2014 2015
Distracted Driving Deaths  3,092 3,331 3,328 3,154 3,179 3,477
All Motor Vehicle Deaths  32,999 32,479 33,782 32,894 32,744 35,092
Distracted Driving Injuries  416,000 387,000 421,000 424,000 431,000 391,000
All Motor Vehicle Injuries  2,239,000 2,217,000 2,362,000 2,313,000 2,338,000 2,443,000

Young adult and teen drivers

  • Drivers under the age of 20 have the highest proportion of distraction-related fatal crashes.1
  • In 2017 9% of all teen motor vehicle crash deaths involved distracted driving.5
  • CDC’s national Youth Risk Behavior Surveillance System (YRBSS) monitors health-risk behaviors among high school students, including texting or emailing while driving.6,7 Recent YRBSS findings include:
    • In 2017, 42% of high school students who drove in the past 30 days reported sending a text or email while driving.7
    • Students who reported frequent texting while driving were:
      • Less likely to wear a seatbelt.6
      • More likely to ride with a driver who had been drinking.6
      • More likely to drink and drive.6


  • Many states are enacting laws – such as banning texting while driving, or using graduated driver licensing systems for teen drivers – to help raise awareness about the dangers of distracted driving and to help prevent it from occurring. However, the effectiveness of cell phone and texting laws on decreasing distracted driving-related crashes requires further study. The Insurance Institute for Highway Safety keeps track of distracted driving laws. 8
  • As of March 2019, 16 states and the District of Columbia had banned drivers from hand-held phone use. 8
  • As of March 2019, texting while driving is banned in 47 states and the District of Columbia. Two additional states ban texting while driving for new drivers. 8
  • Some local governments also have bans on cell phone use and texting while driving.8

Federal government

    • On September 30, 2009, President Obama issued an executive order prohibiting federal employees from texting while driving on government business or with government equipment.9
    • On September 17, 2010, the Federal Railroad Administration banned cell phone and electronic device use of employees on the job.10
    • On October 27, 2010, the Federal Motor Carrier Safety Administration enacted a ban that prohibits commercial vehicle drivers from texting while driving.11
    • In 2011, the Federal Motor Carrier Safety Administration and the Pipeline and Hazardous Materials Safety Administration banned all hand-held cell phone use by commercial drivers and drivers carrying hazardous materials.11
    • From 2010 to 2013, NHTSA evaluated the Distracted Driving Demonstration Projects. These projects increased police enforcement of distracted driving laws and increased awareness of distracted driving using radio advertisements, news stories, and similar media. After the projects were complete, observed driver cell phone use fell from 4.1% to 2.7% in California, 6.8% to 2.9% in Connecticut, 4.5% to 3.0% in Delaware, and 3.7% to 2.5% in New York.13, 14
    • In April of 2014, NHTSA began their annual “U Drive. U Text. U Pay.” campaign to raise awareness of the dangers of distracted driving.15
      NHTSA provides campaign materials for state and local law enforcement:


  1. National Highway Traffic Safety Administration. Traffic Safety Facts Research Notes 2016: Distracted Driving.S. Department of Transportation, Washington, DC: NHTSA; 2015. Available at https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/812517. Accessed 25 March 2019.
  2. National Highway Traffic Safety Administration. Policy Statement and Compiled FAQs on Distracted Driving. U.S. Department of Transportation, Washington, DC. Available at: http://www.nhtsa.gov.edgesuite-staging.net/Driving+Safety/Distracted+Driving/Policy+Statement+and+Compiled+FAQs+on+Distracted+Driving. Accessed 11 April 2018.
  3. Vegega, M., Jones, B., and Monk, C. National Highway Traffic Safety Administration. Understanding the effects of distracted driving and developing strategies to reduce resulting deaths and injuries: A report to congressCdc-pdf. U.S. Department of Transportation, Washington, DC: 2013.
  4. National Highway Traffic Safety Administration. Facts and Statistics. U.S. Department of Transportation, Washington, DC. Available at: http://www.distraction.gov/stats-research-laws/facts-and-statistics.html. Accessed 11 April 2018.
  5. National Highway Traffic Safety Administration. Teen and Distracted Driving 2017. Available at: https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/812667. Accessed 25 March 2019.
  6. Olsen, E.O., R.A. Shults, and D.K. Eaton. Texting while driving and other risky motor vehicle behaviors among US high school students. Pediatrics, 2013. 131(6): p. e1708-15.
  7. Centers for Disease Control and Prevention. Youth Risk Behavior Surveillance – United States, 2015Cdc-pdf. Available at: https://www.cdc.gov/features/yrbs/. Accessed 25 March 2019.
  8. Insurance Institutes for Highway Safety. Distracted Driving: Cellphones and texting. 2018. Available at: http://www.iihs.org/iihs/topics/laws/cellphonelaws. Accessed 11 April 2018.
  9. Federal Leadership on Reducing Text Messaging while Driving (Executive Order 13513). 2009: 3 CFR. p. 3. Available at: https://www.federalregister.gov/documents/2009/10/06/E9-24203/federal-leadership-on-reducing-text-messaging-while-driving. Accessed 11 April 2018
  10. Federal Railroad Administration. Restrictions on Railroad Operating Employees: Use of Cellular Telephones and Other Electronic Devices. 2010. Available at: https://www.fra.dot.gov/eLib/details/L03256. Accessed 11 April 2018
  11. Federal Motor Carrier Safety Administration. Limiting the Use of Wireless Communication Devices. 2010. Available at: https://www.fmcsa.dot.gov/regulations/rulemaking/2010-23861. Accessed 16 April 2018
  12. Pipeline and Hazardous Materials Safety Administration. Commercial Motor Vehicle Drivers: Restricting the Use of Cellular Phones. 2011. Available at: https://www.federalregister.gov/documents/2011/12/02/2011-30749/drivers-of-cmvs-restricting-the-use-of-cellular-phones. Accessed 11 April 2018.
  13. Chaudhary, N. K., Casanova-Powell, T. D., Cosgrove, L., et. al. National Highway Traffic Safety Administration Evaluation of NHTSA distracted driving demonstration projects in Connecticut and New YorkCdc-pdf. U.S Department of Transportation, Washington, DC; 2012.
  14. Chaudhary, N. K., Connolly, J., Tison, J., Solomon, M. National Highway Traffic Safety Administration. Evaluation of the NHTSA distracted driving high-visibility enforcement demonstration projects in California and DelawareCdc-pdf. U. S. Department of Transportation, Washington, DC; 2015.
  15. National Highway Traffic Safety Administration. Distracted Driving. U Drive. U Text. U Pay. Available at: https://www.trafficsafetymarketing.gov/get-materials/distracted-driving/u-drive-u-text-u-pay. Accessed 11 April 2018.