Category Archives: Impairment

Prioritizing Safety This Holiday Travel Season

By Stephanie Shaw, Acting Chief, NTSB Safety Advocacy Division

This week, families and friends will gather to celebrate the Thanksgiving holiday. According to estimates from AAA, nearly 55 million people will travel away from home this year, with about 49 million of them taking to the roads.

As we mark the beginning of the holiday travel season, we want to ensure that everyone arrives safely at their destinations. Unfortunately, travel on our roads can be the riskiest mode of travel during the holiday season.

NTSB investigations continue to highlight actions needed by regulators, legislators, and industry to ensure the safest transportation system for the traveling public. Our Most Wanted List (MWL) identifies specific transportation safety improvements needed across all modes. It includes five road safety improvements that address pervasive problems like speeding, alcohol and other drug impairment, and distraction. The MWL also calls for collision-avoidance and connected vehicle technologies and implementation of a Safe System Approach to better protect all road users.

At the NTSB, we believe that safety is a shared responsibility, so for the traveling public, we’ve highlighted some ways you can keep yourself and others safe, regardless of the travel mode you choose.

By Car

Impairment by alcohol and other drugs, unsafe speeds, fatigue, and distraction continue to play major roles in crashes. Here’s what you can do:

  • Designate a sober driver, or call a taxi, or ridesharing service if your holiday celebrations involve alcohol or other impairing drugs.
  • Follow safe speeds. In bad weather, safe speeds are often below the designated speed limit. Speeding increases the chance of being involved in a crash and intensifies the severity of crash injuries.
  • Make sure you’re well rested! A fatigued driver is just as dangerous as one impaired by alcohol or other drugs.
  • Avoid distractions. Don’t take or make calls or text while driving, even using a hands-free device. Set your navigation system before you start driving. If you’re traveling with others, ask them to navigate.
  • Make sure to use the correct safety restraint for child passengers, and be sure it’s installed correctly.
  • Ensure you and all your passengers are buckled up! In a crash, seat belts (and proper child restraints) are your best protection against death and serious injuries.

By Bus

The NTSB has made recommendations to improve motorcoach operations and vehicle crashworthiness, but travelers should know what to do in an emergency.

  • Pay attention to safety briefings and know where the nearest emergency exit is. If it’s a window or roof hatch, make sure you know how to use it.
  • Ask your driver to give you a safety briefing if you’re unsure of where the exits are or how to use them.
  • Use your seat belt when they’re available!

By Plane or Boat

These tips can help you and your loved ones in an emergency on planes or vessels.

  • Pay close attention to the safety briefing! Airline and marine accidents have become very rare, but you and your family can be safer by being prepared.
  • Know where to find the nearest emergency exit and flotation device whether you’re on an airplane or a boat.
  • Confirm that you and your traveling companions—even children under age 2—have your own seats and are buckled up when flying.
  • Don’t forget your child’s car seat. The label will usually tell you if your child car seat is certified for airplane use; the owner’s manual always has this information.
  • Call the airline and ask what the rules are for using a child’s car seat on your flight, if you don’t already know.
  • Follow crewmember instructions and remain calm in an emergency.

By Train

The NTSB has made recommendations to improve passenger rail operations and vehicle crashworthiness, but travelers should also follow these safety tips.

  • Stow carry-ons in the locations provided (overhead and racks). Don’t block aisles.
  • Review your trains safety information which may be provided as a safety card in your seat pocket or displayed in your railcar.
  • Follow crewmember instructions and remain calm in an emergency.

No matter how you travel, make a commitment to put safety first.

We wish everyone a safe and happy Thanksgiving.

Honor Traffic Victims with Action

By Chair Jennifer Homendy

50 million deaths. Hundreds of millions of injuries.

That’s the worldwide cost of traffic violence, in human terms. It’s difficult to comprehend fully, which is why the World Day of Remembrance for Road Traffic Victims is so meaningful.

This annual observance provides a time to reflect on the real people behind the statistics: mothers, fathers, sons, daughters, grandparents, aunts, uncles, cousins, colleagues, best friends, and neighbors.

It’s a time to support those who’ve lost a loved one to the public health crisis on our roads.

And it’s a time to act, starting with NTSB recommendations.

Lessons from Tragedy

Since last year’s World Day of Remembrance, the NTSB has made 26 new recommendations to improve road safety. All remain open.

Where did these recommendations come from? They are the result of rigorous NTSB investigations into devastating crashes, outlined below. Each one is a lesson from tragedy, which is why we don’t rest until a recommendation is implemented.

At the NTSB, we believe the most meaningful thing we can do for victims of traffic violence is to advocate for our safety recommendations.

In other words: we choose to honor the victims with action.

Here are just some of the victims we’re remembering today — along with the recommended safety improvements to best honor their memory. 

Today we remember two people who were killed and seven who were injured in a Belton, SC, crash between an SUV and a bus carrying disabled passengers. The actions we demand on their behalf include the following:

  • Ban nonemergency use of portable electronic devices, like cellphones, for all drivers.  
  • Recruit cellphone manufacturers in the fight against distracted driving; they should automatically disable distracting functions when a vehicle is in motion.
  • Provide annual safety training for people employed to transport wheelchair users.  
  • Develop a side-impact protection standard for new, medium-size buses, regardless of weight — and require compliance.

We should honor the victims of the Pennsylvania Turnpike crash that injured 50 people and killed five others — including a nine-year-old child — by taking the following actions:

  • Develop performance standards for advanced speed-limiting technology, connected-vehicle technology, and collision-avoidance systems — and require their use on new vehicles, as appropriate.
  • Require newly manufactured heavy vehicles to have onboard video event recorders.
  • Deploy connected-vehicle technology nationwide.
  • Take a comprehensive approach to eliminate speeding. Among other measures, this means thinking long and hard about the 85th percentile approach and using speed safety cameras, which includes working to remove restrictions against them. 

Here’s what we must do to honor the three people who were killed and the 18 who were injured when a bus overturned in Pala Mesa, California:

  • Require all new buses to meet a roof strength standard.
  • Sponsor research into safe tire tread depths for commercial vehicles.
  • Require seat belt use.

The best way to remember the victims of the Decatur, Tennessee, school bus crash that injured 14 people and killed two people, including a 7-year-old child, is to take the following steps:

  • Make lap-shoulder belts mandatory in new school buses.
  • Require lane-departure prevention systems on heavy vehicles.

And what about the nine people who died in a head-on crash in Avenal, California, on New Year’s Day — seven of whom were children? We must implement the following NTSB recommendations in their memory:

  • Require alcohol-detection systems in all new vehicles to prevent alcohol-impaired driving.
  • Encourage vehicle manufacturers to combat alcohol-impaired driving by accelerating progress on advanced impaired driving prevention technology and finding new ways to use existing technology, like driver monitoring systems.
  • Incentivize vehicle manufacturers and consumers to adopt intelligent speed adaptation (ISA) systems. One way to achieve this is to include ISA in the New Car Assessment Program. Notably, ISA became mandatory in July 2022 for all new models of vehicles introduced in the European Union.
  • Develop a common standard of practice for drug toxicology testing by state officials.

Remember. Support. Act.

Even as we advocate for our safety recommendations, more crashes are occurring daily — which means more investigations. The work continues.

And yet, we cannot let the magnitude of the road safety crisis deter us.

We must keep fighting for zero, which is only possible through a Safe System Approach

We must fight for road users around the world who deserve to be safe.

We must fight for those whose lives are forever changed by traffic violence.

We must fight for those who are no longer here to fight for themselves.

For all these people and more, the NTSB will keep fighting. And so will I.

Help Us Reach Zero:  Adopt All-offender Ignition Interlock Laws

By Leah Walton, NTSB Safety Advocate

In the Spring of this year, I attended the Association of Ignition Interlock Program Administrators (AIIPA) Annual Conference, a gathering of about 130 people all committed to eliminating impaired driving. Attendees included state ignition interlock program administrators, ignition interlock manufacturers, researchers, law enforcement, toxicologists, and representatives from the treatment and criminal justice communities.

It was no surprise that a hot topic of the conference was the early estimates of traffic fatalities for 2021 released the same week by the National Highway Traffic Safety Administration (NHTSA). The numbers showed a trend in the wrong direction, with an estimated 42,915 people killed in motor vehicle crashes, a 10.5 percent increase from 2020. This number is the highest number of fatalities since 2005. Specifically, fatalities in police-reported, alcohol-involvement crashes were up 5 percent compared to 2020.

A breath ignition interlock device (IID), estimates a driver’s blood alcohol concentration (BAC). It is installed in a vehicle and the driver must provide a breath sample that does not exceed a certain BAC threshold (for instance, .00 BAC or .02 BAC) before the vehicle will start or continue to operate. Installing these devices can be a penalty for drivers convicted of driving while intoxicated (DWI) or driving under the influence (DUI). They allow impaired-driving offenders to continue to operate their vehicles on an ignition interlock restricted license, rather than having their license suspended altogether.

Ignition interlocks have been a piece of the NTSB’s comprehensive solution to eliminate impaired driving since 2000, when we recommended that all 50 states and DC establish a comprehensive program designed to reduce the incidence of alcohol-related crashes and fatalities caused by hard-core drinking drivers, including elements such as those suggested in the NTSB’s Model Program, such as requiring ignition interlocks for high-BAC first offenders and repeat offenders. The issue is still urgent enough that “Prevent Alcohol- and Other Drug-Impaired Driving” is on our 2021–2022 Most Wanted List of Transportation Safety Improvements.

In our 2012 Wrong Way Driving report, we found that installing alcohol ignition interlocks on the vehicles of all DWI offenders (first-time and subsequent-time offenders) would reduce crashes caused by alcohol-impaired drivers. Thus, we issued a safety recommendation to 33 states, Puerto Rico, and DC to enact laws to require the use of alcohol IIDs for all individuals convicted of DWI offenses (at the time of publishing the report, 17 states already had a law requiring mandatory IID installation for DWI first offenders).

In May 2012, the NTSB held a forum, Reaching Zero: Actions to Eliminate Substance-Impaired Driving, to identify the most effective, scientifically based actions needed to reach zero crashes associated with substance-impaired driving. In the resulting final report, adopted in May 2013, we discussed all-offender ignition interlock laws as part of a comprehensive strategy to prevent alcohol-impaired driving. Currently, 34 states have all-offender ignition interlock laws.

It’s difficult to quantify how many drivers currently have, an IID in their vehicle. However, in 2022, Mothers Against Drunk driving (MADD) reported that in 14 years (2006–2020), ignition interlocks had stopped 3.78 million drivers with a BAC of 0.08[1] g/dL or higher from starting their vehicles. Requiring ignition interlocks for all offenders is a swift and certain penalty for alcohol-impaired driving. IIDs can be installed on arrested DUI offenders’ vehicles immediately, to ensure they are not driving alcohol-impaired while they await trial. These devices are effective, both at preventing alcohol-impaired driving as well as reducing DUI recidivism. A 2016 California DMV study of the state’s ignition interlock pilot program showed ignition interlocks were associated with a 73 percent lower odds of recidivism compared to license suspension alone for first-time offenders during the first 182 days after conviction.

For more than a decade, the number of alcohol-impaired driving fatalities had become stagnant, with 10,000 people killed every year. Now, those numbers are rising again, with 11,654 impaired driving fatalities in 2020. And, like the fatality numbers, the conversation around impaired driving has stagnated, too. Many people are hopeful that new advanced driver assistance systems, collision-avoidance systems, in-vehicle alcohol detection technologies and automated vehicle technologies will end impaired driving once and for all. We are hopeful, too. But as we know, it takes at least 20 years for new technology to fully penetrate a fleet of vehicles. We cannot—and should not—accept the fully preventable loss of 10,000 lives each year while we wait. We must implement the countermeasures that we have available now that we know work, like IIDs.

While at the AIIPA conference, I had the opportunity to address the attendees. I shared that I started my highway safety career with MADD in 2001, and at that time, I could not imagine that in 20 years I would still be here advocating for countermeasures to eliminate impaired driving. I thought that by 2022, surely people would learn to make smart choices and designate a sober driver. Unfortunately, we have made very little progress. That can change if all states adopt all-offender ignition interlock laws. We could finally make meaningful progress toward eliminating this dangerous behavior that ends in so many completely preventable tragedies.  


[1] NTSB recommends that all 50 states, Puerto Rico, and the District of Columbia lower their legal BAC limit to .05 percent g/dL or lower. In 2018, Utah became the first state with a BAC limit of .05 percent.

We Need to Change the Bike Safety Conversation

By Chair Jennifer Homendy

This is the second in a three-part series examining the safety of vulnerable road users, as new federal data show a rise in traffic deaths among motorcyclists, bicyclists, and pedestrians last year. Read the first post.

I love nearly everything about bicycles, from riding around Virginia to creating art for the NTSB office with old parts. I say “nearly” everything because U.S. roads are far too dangerous for bicyclists — and it’s getting worse.

Wall art by Chair Homendy from bicycle parts hangs at NTSB headquarters

On World Bicycle Day, I’m calling on every road user to help change the conversation.

Outdated Thinking is Deadly

Bicycles have been around for two centuries. But that’s no excuse for our safety approach to be stuck in the past, as it currently is.

We have to stop telling bicyclists not to get injured. We have to let go of the idea that educating bike riders will solve the problem. This type of thinking is too narrow to stem the public health crisis on our roads — and clinging to it is proving to be deadly.

Chair Homendy on a bike ride with NTSB team member Ivan Cheung

Of course, we implore all road users to make safe choices to protect themselves and others. But we’re missing the bigger picture when we only focus on individuals’ actions. It’s certainly not how we get to our goal of zero traffic deaths!

Instead, we should be talking about how the entire system is failing to protect bicyclists and other vulnerable road users, such as pedestrians and motorcyclists. This means asking new questions such as the following:

  • Are vehicles equipped with technology to prevent crashes with bicyclists?
  • Are drivers traveling at speeds that would make it unlikely for a bicyclist to survive a crash?
  • Is the road itself designed to prevent crashes and protect bicyclists?
  • If a crash does occur, how effective was the emergency response in its goal of saving lives and treating injuries?  

These questions help us “zoom out” and see that we can’t solve our road safety crisis by focusing solely on individual road users. We also have to consider safe vehicles, safe speeds, safe roads, and post-crash care. That’s why Protect Vulnerable Road Users through a Safe System Approach is on the NTSB’s Most Wanted List of Transportation Safety Improvements. 

In a truly Safe System, the safety burden is shared by all, from individual road users to traffic safety and highway engineers, regulators, vehicle manufacturers, and more. Absolutely everyone is responsible for preventing crashes.

Because even one death is one too many.

Tragically, the stakes have never been higher. According to data released last month by the National Highway Traffic Safety Administration (NHTSA), 985 cyclists died on our roads last year — a 5% increase over 2020 levels. Combined with the 9% increase in motorcycle deaths and the 13% jump in pedestrian deaths, you can see how dire the situation is for vulnerable road users.

We have to do better. And that means considering all components of a Safe System. The best place to start is with the implementation of NTSB safety recommendations.

Here are just some of the ways we could make streets safe for all road users:

  • Invest in bike- and pedestrian-friendly infrastructure, like separated bike lanes and safety treatments at intersections. The recent infrastructure law presents a once-in-a-generation opportunity to make such lifesaving investments.
  • Reduce speeds, especially in areas where there are a lot of vulnerable road users, like bicyclists. This can be accomplished through infrastructure improvements, like road diets; granting local jurisdictions the authority to set safe speeds for their own community and implement speed safety camera programs; and requiring auto manufacturers to install advanced speed-limiting technology on vehicles.
  • Require in-vehicle technologies, such as automatic emergency braking, that can help prevent crashes before they occur — and not just crashes with other cars and trucks, but with bicyclists, pedestrians, and motorcyclists as well.
  • Require large vehicles to be equipped with visibility-enhancement systems to better detect cyclists and pedestrians in their blind spots.
  • Prevent impaired driving, which leads to one in four traffic fatalities. NHTSA should require vehicles to come equipped with technology that will detect and prevent drunk driving. States should lower the per se blood alcohol content (BAC) to .05, an action only Utah has taken (with proven success!). States should also implement laws requiring all drivers convicted of alcohol-impaired driving to use an interlock device.
  • Require front, side, and rear underride guards on newly manufactured trucks to protect cyclists and pedestrians from going beneath large trucks.
  • Collect and analyze data, including hospital data, on the level of bicycling activity, crashes, and injuries. State and local leaders should use this data to design countermeasures and evaluate outcomes to measure effectiveness. How do you know if a project or program is successful if you aren’t tracking progress?

My Next Project — And the Nation’s 

My next bike project has already begun. I’m restoring an old Sears Spaceliner that I picked up at my local thrift shop. And I’m planning a few rides with the Washington Area Bicyclist Association.

I’m also using World Bicycle Day as an opportunity to assign you a project of your own: Join NTSB in changing the bike safety conversation. Ask new questions. Stop putting the entire safety burden on bicyclists. Embrace the Safe System approach.

The lives of vulnerable road users depend on it.

Motorcycle Safety Is Everyone’s Responsibility

By Chair Jennifer Homendy

This is the first in a three-part series examining the safety of vulnerable road users, as new federal data show a rise in traffic deaths among motorcyclists, bicyclists, and pedestrians last year.

When it comes to learning, I’m one of those people who doesn’t just want to read about something — I want to experience it firsthand whenever possible.

That’s why I got my motorcycle endorsement.

In fact, enrolling in the training course was one of the first things I did when I became an NTSB Board Member back in 2018. I wanted to feel the thrill of operating a motorcycle, learn from my classmates about their love of riding, and gain a deeper understanding of the safety risks all riders face.

Most of all, I wanted to become a more effective safety advocate.

Photo of Chair Jennifer Homendy at a Wheels Up Motorcycle Training Course, in Fredericksburg, VA.

A Tragic New Record

Motorcyclists — motorcycle riders and their passengers — have the highest risk of fatal injury among all motor vehicle users. A major reason is that motorcycles afford riders less protection in a crash.

This means, for every mile they traveled in 2020, the average motorcyclist’s risk of death in a traffic crash was 28 times greater than that of a passenger car occupant.

The picture is only getting bleaker. New data from the National Highway Traffic Safety Administration (NHTSA) show that 6,101 motorcyclists died on our roads last year. Not only is this an all-time high — it’s a 9% increase from 2020, which held the previous record.

That means the last two years are the deadliest on record for motorcyclists in the United States.

What Needs to be Done

We know what needs to happen to save motorcyclists’ lives.

First and foremost, we need to adopt the Safe System approach to protect  vulnerable road users, such as motorcyclists, bicyclists and pedestrians. It’s so important that it’s on our 2021-2022 Most Wanted List of Transportation Safety Improvements.

A Safe System addresses all aspects of traffic safety: road users, vehicles, speeds, roads, and post-crash care. We must make better safety investments, from road treatments, vehicle design, and collision-avoidance systems to strong traffic safety laws to mitigate risk and save lives for all road users.

But what does that mean in practice? The first step is to change the way we think and talk about safety. When it comes to motorcycle safety, it means we must stop spending so much time talking about what riders should do to mitigate their risk.

It’s not only unfair to put the full safety responsibility on motorcyclists, but it’s also ineffective. In a truly safe system, no individual road user’s action or inaction can cost them their life; there are redundancies built in so that if one part fails, a person is still protected.

The NTSB took a deep dive into motorcycle safety with our 2018 research report, which has specific recommendations to protect motorcyclists. And, because motorcyclists are at such risk in crashes with passenger vehicles, we should also heed NTSB recommendations in our reports on speeding and substance-impaired driving.

Combined, these three reports have 50 safety recommendations — that’s 50 opportunities for regulators, states, policymakers, manufacturers, and associations to save lives on our roads.

As we close out Motorcycle Safety Awareness Month and head into the deadly days of summer, now’s the perfect moment to implement NTSB safety recommendations.

The Time is Now

Getting my motorcycle endorsement helped me see the road from a rider’s perspective. It also deepened my resolve to ensure every motorcycle rider and passenger is safe on our roads.

But you don’t need to have firsthand experience to understand how dire the situation is. After all, we set a tragic new record for motorcyclist deaths last year. 

We can’t wait another day. The families of the 6,101 riders we lost last year deserve action.