Why Don’t Semi Trucks Use Airbags?

It may seem surprising, but airbags aren’t standard in semi-trucks. The primary reason lies in the fundamental differences between semi-trucks and passenger vehicles. Cars are designed for lighter frames, making front-end collisions particularly dangerous for occupants—airbags help mitigate that. Semi-trucks, however, are large, heavy, and built to endure collisions differently.

According to the National Highway Traffic Safety Administration (NHTSA), airbags designed for passenger vehicles cannot handle the unique dynamics of truck accidents. This is because the energy involved and the physics of a crash in a truck differ significantly from those of smaller cars. Consequently, semi-trucks employ alternative safety measures that are more effective given their size, weight, and purposes.

Advanced Safety Features in Semi Trucks

Modern semi-trucks are equipped with state-of-the-art safety systems that take a proactive and protective approach to driver safety. These technologies are tailored to the specific challenges of operating large, heavy vehicles.

1. Seat Belts That Save Lives

Seat belts remain the most basic, yet crucial, safety feature for truck drivers. According to the Federal Motor Carrier Safety Administration (FMCSA), consistent seat belt use reduces the risk of fatal injuries in truck accidents by up to 65%. They prevent drivers from being ejected in a crash and keep them secure, eliminating movement that could heighten the severity of injuries.

2. Electronic Stability Control (ESC)

ESC technology plays a huge role in preventing rollovers and loss of control in slippery or hazardous conditions. It works by monitoring the truck’s movement and applying braking power to individual wheels, restoring balance when instability is detected. The Insurance Institute for Highway Safety (IIHS) reports that ESC reduces the risk of fatal crashes in large trucks by more than half, making it a must-have feature on the road.

3. Collision Mitigation Systems (CMS)

Collision mitigation systems use advanced sensors, cameras, and radar to monitor the road ahead. When a potential collision is detected, they alert the driver and can even apply the brakes automatically. Studies have shown these systems to be highly effective in reducing rear-end crashes—incidents that are particularly dangerous for truck drivers.

4. Lane Departure Warning and Lane-Keeping Assist

Fatigue and distraction are common challenges for truck drivers, which is why lane departure systems are so valuable. Lane departure warnings alert drivers when their truck drifts out of its lane, while lane-keeping assist gently steers the vehicle back into position. Together, they help prevent accidents caused by unintentional lane changes.

5. Anti-lock Braking System (ABS)

ABS is another critical safety feature that prevents wheels from locking up during sharp braking. By maintaining traction, ABS ensures greater control in sudden stops or on uneven surfaces. It has been a standard feature in commercial trucks for years and remains vital to their safety systems.

6. Reinforced Cab Designs

Unlike passenger cars, which rely on crumple zones to absorb crash impact, semi trucks are designed with stronger cab structures. These cabs are built to withstand significant impact forces, protecting drivers during side and rollover crashes where airbags would provide little added benefit.

Why These Features Outperform Airbags

The absence of airbags in semi-trucks isn’t an oversight—it’s a calculated decision informed by the unique dynamics of trucking accidents. While airbags are effective in small, light vehicles, they aren’t as beneficial in trucks due to differences in size, weight, and crash dynamics. Safety technologies like ESC, CMS, and reinforced cabs provide tailored protection that airbags simply cannot.

The Bottom Line

Semi-trucks may not utilize airbags, but they are far from lacking in safety advancements. From seat belts and electronic stability control to collision mitigation systems and robust cab designs, these vehicles are equipped with features that address the unique challenges of commercial trucking. These tailored solutions not only keep drivers safe but also underscore the industry’s commitment to continuous innovation.

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The Federal Motor Carrier Safety Administration (FMCSA) recently announced its plan to deploy “quantitative data collection techniques” through an anonymous online survey. This initiative aims to understand truckers’ seat belt habits and road safety perceptions better.

The FMCSA noted that current data on seat belt usage and road safety perceptions do not reflect the diversity of commercial motor vehicle (CMV) drivers in a post-COVID-19 era. “Understanding these behaviors and perceptions will help us identify emerging trends and inform future communication efforts targeting CMV drivers,” the agency stated.

Federal transportation officials have been increasingly concerned about these trends in recent years. In 2021, Jack Van Steenburg, then FMCSA’s chief safety officer, highlighted that nearly half of the almost 900 large truck occupants killed in 2019 were not wearing seat belts. “It’s hard to believe that people are still not wearing seat belts while driving trucks,” Van Steenburg remarked.

Deputy Secretary of the U.S. Department of Transportation, Polly Trottenberg, also expressed concern, noting a decline in seat belt usage among truckers at a DOT safety forum last year. “The fatality numbers show an alarming trend of unbelted drivers,” she emphasized.

In 2021, the National Highway Traffic Safety Administration reported that 64% of truck drivers killed in large truck crashes were not wearing seat belts, a rise from 59% in 2019 and 44% in 2020.

The FMCSA plans to survey 1,060 truck drivers in the U.S. with internet access, expecting the process to take about 10 minutes over three to four weeks.

According to FMCSA, “The survey collection is non-controversial and does not raise issues for other federal agencies. The results will not be publicly disseminated or used for major policy decisions, and no personal data will be collected.”

The agency is seeking public comments on the survey plan before gaining approval from the Office of Management and Budget. Input is requested on the necessity of the proposed data collection and ways to improve the quality and usefulness of the information.

Source: FREIGHTWAVES

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Recent data highlights the severity of the issue, revealing that nearly seven out of every 10 truck drivers killed in fatal crashes were not wearing seat belts. This statistic serves as a clear reminder of the need for greater attention to seat belt regulations among professional drivers.

In 2022, a total of 916 truck drivers lost their lives in crashes, with a staggering 69.3% of those fatalities attributed to drivers not wearing their seat belts, according to the National Highway Traffic Safety Administration’s Fatality Analysis Reporting System. This marks the second-highest percentage of drivers killed in crashes without seat belts since 2017, highlighting the persistent nature of the problem.

“We use this and other data to understand more about why this trend is continuing, why truck drivers are not using their seat belts, and countermeasures of how we can reduce this trend,” said Jessica Powell, a statistician in the agency’s crash data analytics division.

Despite the well-documented benefits of seat belts, some drivers neglect this essential and simple safety precaution.

“In a crash, a safety belt keeps the driver in place behind the steering wheel and in control of the vehicle while the vehicle absorbs the impact of the crash and decelerates, which prevents or reduces the consequences of an accident,” FMCSA said. “Safety belts, especially lap-shoulder belts, spread the stress and impact forces of a crash along the stronger and broader areas of the body, such as the hips and shoulders, limiting injuries and minimizing the possibility of truck occupants striking the steering wheel, shift lever, windshield, other objects, and other occupants.”

Regulations require drivers to use seat belts, and compliance is checked during inspections by CMV inspectors, as Adrienne Gildea, deputy executive director of the Commercial Vehicle Safety Alliance, emphasizes.

FMCSA regulations state, “A CMV which has a seat belt assembly installed at the driver’s seat shall not be driven unless the driver has properly restrained himself/herself with the seat belt assembly.”

Troopers patrolling the highways are vigilant in enforcing seat belt regulations, pulling over truck drivers without their seat belts, according to John Sova, a CVSA roadside inspection specialist.

Not wearing a safety belt is like rejecting a free insurance policy, as highlighted by FMCSA. The agency, along with safety organizations like the Insurance Institute for Highway Safety, debunk common myths surrounding seat belt usage, including beliefs that safety belts are unnecessary at lower speeds or that being thrown clear in a crash is preferable.

In reality, wearing a seat belt is a crucial safety precaution that not only protects the driver but also enhances overall road safety. By debunking misconceptions and promoting seat belt usage, we can strive towards a safer environment for all road users. Remember: Buckling up saves lives.

Source: Transport Topics

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“One thing we’re seeing in trucking and other sectors is that seat belt usage is going down,” said Polly Trottenberg, deputy secretary of the U.S. Department of Transportation, speaking at a DOT safety forum. “And when we look at the fatality numbers they are extraordinarily disproportionately people who are unbelted.”

New data from the National Highway Traffic Safety Administration shows that an alarming number of truck drivers killed in crashes of large trucks were not wearing a seat belt. In fact, 64% of these drivers died without buckling up in 2021, up from 59% in 2019 and 44% in 2020.

Seat belt use is critical for safety, as those who did wear one in a crash had a higher chance of survival. The data also shows that 75% of those not wearing a seat belt were completely ejected from the truck, highlighting the importance of buckling up while behind the wheel.

“This is a trend that we’re really focusing on, because it’s pretty clear the numbers are increasing,” said Jessica Powell, a Federal Motor Carrier Safety Administration statistician who presented the data on Tuesday during a meeting of FMCSA’s Motor Carrier Safety Advisory Committee (MCSAC).

MCSAC is working hard to finalize its three-year strategic plan and hopes to have it approved by FMCSA Administrator Robin Hutcheson later this year. During the two-day agenda, the committee will address important issues related to commercial vehicle safety, ensuring that it’s reflected in the strategic plan.

Adrienne Gildea, deputy executive director of the Commercial Vehicle Safety Alliance and vice chair of the committee, has identified the issue as serious enough to warrant inclusion in FMCSA’s strategic plan.

“I think FMCSA should focus across their goals on that issue in particular, including outreach and education,” Gildea said during the meeting.

“They should look more into who these drivers are — younger drivers, older drivers, in certain sectors or regions? Digging into that and understanding who is choosing not to use a safety belt is important and an area where once FMCSA has that information there’s a lot of ways it can be used to improve seat belt use and reduce those fatalities.”

Fatal crashes involving large trucks have risen by 16% and large-truck occupant fatalities have jumped 23%, exceeding 1,000 for the first time since 2005. Pedestrian and work-zone fatalities in large truck crashes have also increased, based on information from NHTSA data.

According to the NHTSA, speeding was the most common truck driver-related factor in these incidents, accounting for 7% of cases, including exceeding speed limits and driving too fast for conditions.

“However, this is such an underreported data element, it’s not a true representation of what’s actually happening on the road,” Powell said, “but it is our best estimate.”

Source: FreightWaves

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