Fact Sheet

2019 SafeTREC Traffic Safety Facts: Drug-Impaired Driving

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

Driving under the influence of drugs is a significant threat to public safety. Various substances can impair cognition, attention, coordination, and other brain functions critical to driving safety. Unlike alcohol, the mechanism for absorption, distribution, and elimination of drugs from the body, as well as cognitive and behavioral effects differ greatly. The use of cannabis, prescription drugs, and other drugs are increasingly prominent on our roadways, where 22.2 percent of the nation’s 37,133 fatalities in 2017 were related to drug-involved driving.

2019 SafeTREC Traffic Safety Facts: Alcohol-Involved Driving

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

While alcohol-involved driving fatalities have fallen significantly in the last three decades, the National Highway Traffic Safety Administration (NHTSA) reports that alcohol-involved driving still comprises a large percentage of traffic injuries and fatalities. On average in 2017, one person died from an alcohol-involved driving collision every 48 minutes. There was a decrease in the numbers of alcohol-involved driving fatalities in the United States between 2016 and 2017. The figures refer to drivers, passengers, bicyclists, and pedestrians fatally killed or seriously injured in an...

2019 SafeTREC Traffic Safety Facts: Bicycle Safety

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

Bicycling is becoming more popular across the country, for commuting, exercise, and leisure. In 2017, there were 783 bicyclists killed in a traffic collision in the US. In citing concern about the level of bicycle fatalities, the Governors Highway Safety Association (GHSA) identified key recommendations for improving safety, including collection of better crash data, increased training for law enforcement to understand laws designed to protect bicyclists, partnerships with bicycling and community organizations regarding safety messaging and public education campaigns about infrastructure...

2019 SafeTREC Traffic Safety Facts: Bicycle Safety

October 16, 2019

Welcome back to the 2019 SafeTREC Traffic Safety Facts blog series, where we feature recent data on some of California's most pressing traffic safety issues! Each day this week and next, we'll highlight the facts for a range of topics related to safety on our roads. In cased you missed it, yesterday's post was on pedestrian safety.

In today's post, explore SafeTREC's fact sheet on bicycle safety. Tomorrow, we'll be highlighting the facts on aging road user safety.

Get the...

2019 SafeTREC Traffic Safety Facts: Pedestrian Safety

October 15, 2019

Today, we are excited to launch the 2019 SafeTREC Traffic Safety Facts blog series which will feature recent data on some of California's most pressing traffic safety issues! Each day this week and next, we'll highlight the facts for a range of topics related to safety on our roads.

In today's post, explore SafeTREC's fact sheet on pedestrian safety. Tomorrow, we'll be highlighting the facts on bicycle safety.

Get the Facts: Pedestrian Safety

As a commute mode, walking is gaining in numbers. The Governors Highway...

2019 SafeTREC Traffic Safety Facts: Pedestrian Safety

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2019

As a commute mode, walking is gaining in numbers. The Governors Highway Safety Association (GHSA) reports that pedestrian fatalities in the nation have increased disproportionately to other traffic deaths. Pedestrian fatalities as a proportion of total traffic deaths increased from 12 percent in 2008 to 16 percent in 2017. Pedestrian fatalities increased by 35 percent from 2008 to 2017 while other traffic deaths decreased by 6 percent. The GSHA also reported the largest proportion of pedestrian deaths around divided highways, which generally have speed limits of 45 or more and lack...

SafeTREC Traffic Safety Facts: Speeding-Related Collisions

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2018

A speeding-related collision is defined as one in which a driver is racing, driving too fast for the conditions, or driving in excess of the posted speed limit. In the United States, speeding has been involved in nearly one-third of all fatal crashes for more than twenty years and is a leading contributing factor in traffic collisions. Speeding reduces a driver’s ability to steer safely around curves or objects, reduces the amount of time a driver has to react to a dangerous situation, and extends safe stopping distances. Nationwide there were 10,111 people killed in speeding-related...

SafeTREC Traffic Safety Facts: Drug-Involved Driving

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2018

The use of cannabis and prescription and other drugs are increasingly prominent on our roadways, where 16.2 percent of the nation’s 37,461 fatalities in 2016 were related to drug-involved driving. In the United States, several states have legalized the use of medical and/or recreational cannabis, increasing concerns about traffic safety. Aside from alcohol, cannabis is the most frequently detected drug in drivers who are involved in collisions. The impact of drugs on the brain and behavior varies considerably depending on the type of drug and how it is metabolized. There are also large...

SafeTREC Traffic Safety Facts: Motorcycle Safety

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2018

In 2016, there were 5,286 motorcycle riders killed on public roadways in the United States, a 5.1 percent increase from 2015. Motorcyclists are at greater risk of injury during collisions—in 2016, motorcyclists were 28 times more likely than passenger car occupants to be fatally injured in a traffic collision, per vehicle miles traveled. In 2016 only 65.3 percent of U.S. motorcyclists wore helmets. In states with universal helmet laws requiring all riders to wear helmets, the known helmet use rate among fatally injured motorcyclists ranged from 66 percent to 100 percent in 2016, while in...

SafeTREC Traffic Safety Facts: Seat Belt Use

Chen, Katherine L.
Tsai, Bor-Wen
Fortin, Garrett
Cooper, Jill F.
2018

Restraint devices such as seat belts are a key element of motor vehicle occupant protection systems. According to the National Occupant Protection Use Survey (NOPUS), in 2016 there was a 90.1 percent front seat belt use rate for the nation as a whole, a 1.8 percent increase over the 88.5 percent reported in 2015. Front seat belt use was slightly higher among women (92.5 percent) compared with men (88.2 percent). Front passengers were more likely to use seat belts (90.1 percent) than rear seat occupants (80.6 percent). One strong determinant of seat belt use is the presence of a seat belt...