Another APRS equipped driver and I were discussing this the other day- we were at the same shipper and only 2 docks apart. Anyhow, he said he fast talked himself out of a situation with law enforcement after being pulled over. He had replied to an aprs message to him and got caught. The jist being because he wasn't using the phone, he was released with his wallet and csa score intact. He got lucky. Kind've comes down to the indivual officer's understanding of the law. I am not willing to risk it. Have my radio on auto reply asking to qsy to the 2m call.