Until enough EV's get out on the roads, it is hard to make a meaningful, informed policy. The only data we have so far are Hybrids in parking lots. I will admit to having been stunned at seeing a Prius on the heels of my kids without them even knowing the car was there. We have just all been conditioned to scan for car dangers with our ears and eyes. Our roadways will get quieter and we will adapt to mostly visual scanning over time. Till then I say do what needs to be done to save lives. If one child's life is saved because of these noise devices, then I say it is well worth it.
Every start, is as good as any start can ever be. - Douglas Darden
2011 LEAF SL VIN#202, Delivered 01.30.11. Now, by far, the oldest LEAF in Colorado.