(a) An operator, unless on official business, may not follow closer than 500 feet a fire apparatus responding to a fire alarm or drive into or park the vehicle in the block where the fire apparatus has stopped to answer a fire alarm.
(b) An operator may not:
(1) follow closer than 500 feet an ambulance that is flashing red lights unless the operator is on official business; or
(2) drive or park the vehicle where an ambulance has been summoned for an emergency call in a manner intended to interfere with the arrival or departure of the ambulance.
Official text of the Texas Transportation Code as published by the Texas Legislative Council.