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Safety Tech: Crash Avoidance or Sensory Overload?

As advanced safety technologies become even more pervasive on mainstream vehicles, are we creating “stupid drivers?"

Step into any new car, and a host of technologies are at your fingertips. It’s sensory overload to the point of potential distraction. This is ironic, knowing that some of those features are designed to keep you from crashing.

Keeping drivers safe is a given. But for fleet operators, economic realities must be weighed when considering crash avoidance options. These options are most often bundled in packages, and they’re not cheap, with price tags of $1,000 or more — and carry question marks as to their retention at resale. So if you’re buying 10 new vehicles, how do you make the case to add $10,000 to your fleet budget?

Safety options are too numerous to describe on this page, but they can generally be divided into systems that alert drivers to dangerous situations and those that actively take control of the vehicle to avoid a crash.

Some systems, such as antilock brakes and electronic stability control, have migrated to standard equipment, along with rearview cameras starting next year. But for the systems you’re able to choose, can you make judgments as to which ones are most effective for the money? The Highway Loss Data Institute (HLDI), the research partner of the Insurance Institute for Highway Safety (IIHS), has insights.
The biggest takeaway from HLDI’s research is that front crash prevention systems are effective. These systems detect proximity to a vehicle and issue a warning to the driver, while pre-charging the brakes. Many systems also brake the vehicle autonomously.

Actual crash and insurance claim data analyzed by HLDI found that vehicles equipped with front crash prevention technology resulted in markedly fewer front crashes than vehicles without. Though these systems vary by complexity and manufacturer, the results showed lower claim rates across the board. Systems that combine a forward collision warning with automatic braking cut rear-end crashes in half.
For other safety technologies, the results aren’t as clear. HLDI found that studies of rear cameras and blind-spot monitoring systems in seven manufacturers resulted in reduced rates of damage of 4% to 6%, or not at all.

Lane departure warning systems revealed no consistent changes in insurance claims for run-off-road crashes, the incidences those systems would be likely to prevent. And they’re turned off half the time, according to an IIHS survey.

“People are turning off [lane departure warning] because they deem it ‘annoying’ and ‘distracting’ due to the frequency of alerts, especially in situations where it's not an issue of not paying attention, but rather that street lines are wavy or faded in ways that trick the system,” says Becky Mueller, senior research engineer for IIHS.

Any qualitative analysis of safety systems should be brought up with another theory — that these new technologies are creating “stupid drivers.”

As these systems become increasingly more complex, and more widely available on mainstream, non-luxury vehicles, we run the risk of relying on the vehicle to do the work for us to keep us out of trouble. (I remember a close call driving my wife’s car, which does not have a backup camera, after regularly relying on the backup camera and audible sensor in my car.)

This paradox has a name — the Yerkes-Dodson law — which correlates the levels of engagement and disengagement to determine optimal achievement. In vehicles, too much stimulation could overwhelm a driver while too little stimulation drives complacency.

This paradox becomes more troubling on the path to autonomous vehicles. Someday, the user will be completely detached from control of the vehicle. In the meantime, these technologies will still need the driver to take over, even as technology increasingly manages more of the task of driving.

Adopting safety technology in fleet vehicles is but one avenue fleet operators can take to make fleets safer. Other measures are more straightforward and economical. For instance, IIHS testing shows dramatic differences in vehicle damages when speeds were reduced by 12 mph. How much does it cost to tell your drivers to simply “slow down”?

Texting while driving is an epidemic — one out of every four car accidents in the U.S. is caused by texting and driving. How much does it cost to reinforce to drivers to “put the phone away”?

With perennially strained fleet budgets, non-tech, face-to-face reinforcements of proper driver behavior might be the most urgent and cost-effective way to concentrate your safety efforts.


  1. Mike Gardner [ August 23, 2017 @ 12:02PM ]

    The 2017 Toyota Rav4 has very sensitive steering and lane drift control. I was pulled over by a Sherriff on the interstate because he thought I was weaving too much. I also think the particular unit was pulling to one side. If you get low in a tight curve the alarm will also sound. Worse yet, rather than alert the driver when closing on a vehicle to pass, before changing lanes, the crash avoidance system just slows you down with no warning, until you are simply matching speed with the slower vehicle. This resulted in constantly having to manually accelerate after having lost momentum. I did not discover a way to turn this system off and had to fight it throughout a 1200 mile trip on busy interstate highways. The only solution was to spend too much time in the left hand passing lane in states that post warnings to only use the left lane for passing. If you are going up a hill and the semi in front of you is going twenty miles under the speed limit you can find yourself matching speed a long ways back while other cars pass you and block you in.

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Author Bio

Chris Brown

Executive Editor

Chris is the executive editor of Business Fleet Magazine and Auto Rental News. He covers all aspects of the fleet world.

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