An NHTSA report [PDF] on the “Incidence of Pedestrian and Bicyclist Crashes by Hybrid Electric Passenger Vehicles,” concludes that hybrid-electrics (HEVs) have a higher incidence rate of pedestrian and bicyclist crashes than do internal combustion-only (ICE) vehicles in certain scenarios. And based on the report’s conclusions, it looks like the relative silence of hybrids running in electric-only mode is to blame for the higher accident numbers.

. . . pedestrian and bicyclist crashes involving both HEVs and ICE vehicles commonly occurred on roadways, in zones with low speed limits, during daytime and in clear weather, with higher incidence rates for HEVs when compared to ICE vehicles. A variety of crash factors were examined to determine the relative incidence rates of HEVs versus ICE vehicles in a range of crash scenarios. For one group of scenarios, those in which a vehicle is slowing or stopping, backing up, or entering or leaving a parking space, a statistically significant effect was found due to engine type. The HEV was two times more likely to be involved in a pedestrian crash in these situations than was an ICE vehicle. Vehicle maneuvers such as slowing or stopping, backing up, or entering or leaving a parking space, were grouped in one category based on that these maneuvers are potentially have occurred at very low speeds where the difference between the sound levels produced by the hybrid versus ICE vehicle is the greatest.

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A year ago, TTAC published a story about out-of-control Toyota Tacomas. Since then, reports continue to surface of “unintended acceleration” events in Lexus ES and IS and Toyota Camry and Camry Solara vehicles. Toyota insists that all-weather floor mats are causing the problem; the accelerator becomes stuck under the rubber. Autocoverup.com alleges, well, you know. “This is a known problem with over 432 complaints,” the site’s author insists. According to NHTSA’s Defect Investigation’s database, reports of unintended acceleration in Lexus ES models first surfaced around 2004 and continued until late 2008. One report (ODI-NHTSA Complaint Number 10252860) describes the problem:

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A US Department of Transportation study released last month shows that thousands of Americans (documented or otherwise) are injured or killed each year in vehicle-related accidents unrelated to driving. The National Highway Traffic Safety Administration (NHTSA) “Not in Traffic Surveillance – 2007 Highlights” study reveals that a total of of 1747 fatalities and 841k injuries were attributed to non-traffic crashes and non-crash incidents. The agency compiled the annual estimates to provide the first-ever look at the magnitude of accidents that cannot be resolved with a new law enforced with traffic citations. Among the findings: 168 individuals are killed each year by falling vehicles. Another 88 peg it by falling out of a car. Electric windows reduce the gene pool by five unlucky souls, and three die while locked in the trunk. About 22 percent of injuries are caused while entering or exiting a vehicle. Twenty percent of injuries are caused by car doors. Some 10k end up in ER after getting jiggy with jacks or hoists. The NHTSA compiled the information from a number of sources including police reports, hospital records and an injury database maintained by the Consumer Product Safety Commission.

There are two main problems with debunking auto-related misconceptions. First, not everyone is ready, willing or able to confront the truth. Second, once you debunk something, it doesn’t stay debunked. TTAC’s Bob Elton dealt with the roof crush standard issue in his editorial “The Counterintuitive Truth About Roof Crush Standards” back in June 2006. He argued that increasing roof strength only increases the number of rollover accidents. Common sense: the higher a vehicle’s center of gravity, the more likely it will roll. Elton also revealed that “In 74% of cases, roof intrusion was not a factor. Rollover accidents are fatal because the occupants are usually ejected, or partially ejected, during the crash.” And that’s because… they’re not wearing their seat-belts. And yet, The Detroit News reports that “The Insurance Institute for Highway Safety [IIHS] said Wednesday it will require automakers to dramatically increase the strength of vehicle roofs to receive its top safety pick ratings.” The road to hell? You don’t know the half of it…

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