For example, I've seen it suggested that many of these accidents occurred in vehicles that were under fire, were speeding to the scene of a combat incident, or were deliberately forced off the road by Iraqi civilian vehicles.
This seems to be borne out by the list of casualties at
http://www.armytimes.com/story.php?f=1-292925-warkilled.phpAt first, the descriptions are very general. From March 22 to May 30, there are 16 fatalities described simply as "killed in a vehicle accident" and two more as "killed in a non-hostile vehicle accident." (Does this mean the first sixteen were hostile?)
After that, these phrases occur only three times, all for accidents specified as taking place in Kuwait. Instead, the descriptions are becoming increasingly more detailed:
4/10 - killed when a car exploded next to his Bradley Fighting Vehicle.
4/17 - Humvee turned over.
4/25 - killed when his vehicle rolled over while traveling through rough terrain. His unit was the quick reaction force and was responding to enemy fire.
4/28 - struck by a civilian vehicle after falling out of a Humvee that swerved to avoid a civilian vehicle.
5/18 - killed when the transport truck in which he was riding rolled over.
5/21 - responding to a civilian call when his vehicle rolled over.
6/1 - Humvee rolled over.
6/6 - was part of an escort mission when the vehicle he was in hit a curb along the road and rolled over.
6/13 - armored personnel carrier threw a track and went over a 4-foot drop-off on the side of the road, causing the vehicle to roll over.
6/25 - the light armored vehicle he was traveling in rolled over.
7/1 - vehicle ran into a ditch while trying to avoid a civilian vehicle.
7/20 - riding in a vehicle that rolled over.