Ah, my links are back up!
Overview of Vehicle Compatibility/LTV Issues
I thought some of you might be interested in seeing that this has been given some consideration by the powers-that-be. This was published in February 1998.
Apparently this was first seen as a problem in the mid-1970’s when VW Beetles began appearing on the highways along with the heavier American cars, and there was a much greater disparity in weight/size at the time. This seems to been less of a problem between 1975 and 1997 - I suppose that the trend towards smaller, more fuel efficient cars during that time accounts for that - but it is now on the rise again due the popularity of SUVs.
Aha! Some of the results of their research have already been put into action - the labels new SUVs have on the dash that warn of their poor maneuverability and tendency to rollover. I recently read somewhere (can’t remember where) that they are considering additonal measures - making the warning labels bigger, brighter, and more specific. For some reason this just doesn’t impress me as a very effective safety measure.
If I’m understanding this correctly, it looks like overhead airbags will be a future safety feature in new vehicles.
I think it’s interesting that the ABS braking system doesn’t seem to be working out as planned. I’ve never driven a vehicle with ABS, but I understand the system was supposed to enable drivers to simply stomp on the brake and not worry about pumping to prevent brake lock. I wonder if it’s another case of drivers being overconfident about a safety feature, and therefore not braking as soon as they should, or driving faster because they believe the ABS brakes can compensate?
Anyway, some of you should feel better to find out that they are requiring, effective in 2002, all LTVs (light trucks, which include SUVs)
It seems that failure to wear seat belts, alcohol use, and speeding/aggressive driving are major contributors to SUV crashes/fatalities. Unfortunately, the best engineering in the world can’t make up for an unsafe driver. However, the braking requirements are a great step in the right direction.
Several people mentioned the stiffness, etc. of SUVs, and sure enough, the NHTSA has looked into that, too.
The New Car Assessment Program: Has It Led To Stiffer Light Trucks and Vans Over The Years?
Apparently, the automakers claimed that meeting the crash requirements of NCAP was having the undesirable effect of increasing the stiffness of SUVs. According to this report, LTVs have actually “softened” over the years of NCAP testing, so participation in NCAP has contributed to the improved safety of these vehicles.
Oh, and I didn’t save the link, but I read that Chevrolet’s 2002 Silverado pickup will have something called Quadrasteer, an all-wheel steering system that should increase maneuverability. If it works out well, the feature will be added to many more vehicles, particularly LTVs.
Another interesting report: Characteristics of Fatal Rollover Crashes
If I understand this correctly, there doesn’t seem to be any decrease in the stability of SUVs (so the vehicles themselves have not deteriorated in design/engineering), but their natural propensity to roll coupled with their increase in the overall percentage of vehicles on the road has put them at the top of the rollover list. The high fatality rate seems to be largely due to the failure of occupants to wear seatbelts, increasing the chances of ejection, partial ejection, and/or being thrown about inside the vehicle. Speeding, alcohol intoxication, and the age/sex of the drivers also seem to be significantly involved in SUV rollover crashes.
No one seems to be sure how much should be blamed on the vehicles and how much on the drivers. There’s no doubt that SUVs (and pickup trucks and vans) are more prone to rollover than regular passenger cars, but a large majority of those accidents involved intoxicated young men who were speeding on two-lane undivided highways. It’s the same problem seen with Camaros/Firebirds - they appeal to the segment of drivers who are the most likely to drive them unsafely.
Well, I see now why the NHTSA links were down; they’ve added some of the 2001 statistics to FARS. I’ll have to check the main page and see if they have anything new on SUVs, etc. Anyone who wants to see crash statistics can go here: