Military grade radars can run at peak power output of over 1MW; airport ATC radars at around 100kW. Given the power limitation of cars, car radars will be under

Military grade radars can run at peak power output of over 1MW; airport ATC radars at around 100kW. Given the power limitation of cars, car radars will be under a kW for sure, probably more in the single-watt range. And health effects start happening if you absorb more than 1kW on a small area of your skin (burns, eye damage etc) - unlikely to happen if the total emission is sub-kilowatt. (I presume there are regulatory limits for this sort of emission anyway, by FCC or otherwise, but I don't know for sure...)