Ravenwood has it all figured out:
You can ban cell phones if you want, but people are still gonna have accidents. The real problem with car accidents is the drivers. You ban drivers and the accident rate drops to zero almost immediately.
Or let’s go it one better even than that — just ban cars and then there will be nothing for the drivers to drive. This reminds me of one of the rarely considered upsides to abortion — aborted children never become smokers.