If you do not have the equipment to measure the RF power densities present at your station, you might ensure compliance with the FCC RF radiation exposure limits by using one or more of the methods included in the amateur supplement to FCC OET Bulletin 65.
For the lowest RF radiation exposure to passengers, you would mount your mobile antenna on the roof of your car. Mobile transceivers produce less RF radiation exposure than hand-held transceivers because when mounted on a metal vehicle roof, mobile antennas are generally well shielded from vehicle occupants.
For safety, if you put up a UHF transmitting antenna, you should make sure the antenna will be in a place where no one can get near it when you are transmitting.
You should make sure your antennas are located so that no one can touch them while you are transmitting because touching the antenna might cause RF burns.
To reduce the risk of shock from high voltages and reduce RF radiation exposure, you should never operate a power amplifier unless its covers are in place.