I think this should be changed to be honest, i feel that at places such as service stations you should be able to get at least an hour, like if you need to nip to the toilet, have a smoke, get a drink etc etc.
I also feel that the section after the fuel pumps and the sleeping sections could possibly be made into a no collision zone, as some people may save there game while parked, to then fire the game back up only do destroy someone who has just parked in the spot they last saved it in.
I have at these one done to me before, parked up in the 1st bay to take a break, someone pulled up behind me so i began to move forward to allow him to park in the place i was in a bang someone spawned in the spot i was moving too, in which i ended up in the back of his trailer .