Ed
Spot on, there's no special hazard. The Department of Transportation (DOT) oversees and regulates (more or less), the advent and certification of a new designs and new concepts, and reviews the safety record for design flaws (more or less). The electric and hybrid designs doesn't lend itself to shock hazard, and safety designs incorporated further protect occupants and responders in every possible scenario ranging from crashes, fires to floodong from boneheads in So Cal who try to drive through roads clearly posted as "Closed" and "Flooded."
This is from a Toyota press statement Titled "Hybrid Hype? Fact and Fiction Surrounding the New Technology," issued on 06/22/2004 from Torrance, CA
"Can emergency workers get shocked by a hybrid that's been involved in an accident?
In the Prius, there are numerous safeguards to help ensure safe operation for drivers and protection of emergency response professionals in the event of an accident. High-voltage cables are located away from areas that workers might access, are painted orange, are shrouded in metal and have specific automatic disablement mechanisms to ensure the lines would have no voltage in them if an accident occurs.
Additionally, beginning with the first-generation Prius, Toyota has developed manuals and assisted in training exercises to ensure correct information is disseminated. These manuals are available on-line to all emergency response personnel. Most importantly, Prius hybrids have been on U.S. roads for five years and Toyota is not aware of any personal injury in the U.S. related to hybrid or EV electrical systems."
Here's the rest of the press statement, which has some great info on patent licensing and a word on diesels.
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