Spikes removed when the cop dies or after time

So just as what the title says! It's pretty annoying driving a car or bike as an innocent civillian and you get your tires popped because some cop forgot to remove his spikes after dying or just arresting the criminal.
Agree. Probably if they leave the area too.
+++
Either after some time or after a single use
Please stop +REP'ing me. I already know I'm most authoritative here