Driving us to distraction

Driving in Israel is a notoriously dangerous business, which most people blame on Israeli lack of respect for rules, or Israeli hot-headedness. A new study, however, shows a strong correlation between the number of car accidents in Israel -- and terror attacks:

On the day of a terror attack and the following day there is no marked change in road deaths compared to an average day, on which 1.3 people are killed in road accidents...
[T]hree days following an attack there is a rise of some 35 percent in the number of people killed in road accidents compared to an average day.... Three days after particularly deadly terror attacks, in which 10 or more people are killed, there is a dramatic jump of almost 70 percent in road accident deaths.

The researchers speculate that the rise is either due to people letting out pent-up aggression in a delayed reaction, or to people mimicking violence, which is apparently a recognized societal phenomenon after public violent events. Another possiblity they don't mention is simple post-traumatic stress and lack of concentration as a result. Either way, this is an unusually concrete way of showing the psychological effects terror has on a society and a reminder that there are thousands of indirect victims of terror who are never really accounted for. Does anyone know whether car accidents in Israel, in general, have risen significantly since September 2000?