I think those rules are more about loud exhaust pointing straight at people’s windows and those fuckers who leave their trailer hitch attached and have it sticking out across the sidewalk at shin height. CO isn’t going to reach any sort of concentration where it will he harmful just from backing in near an AC unit.
I think the point is to discourage keeping your car running in front of the only fresh air intake into a small space. A good example would be people that warm their car up for 5-10 minutes or more to drive it in the winter. That amount would at the very least make a person sick.
I think those rules are more about loud exhaust pointing straight at people’s windows and those fuckers who leave their trailer hitch attached and have it sticking out across the sidewalk at shin height. CO isn’t going to reach any sort of concentration where it will he harmful just from backing in near an AC unit.
I think the point is to discourage keeping your car running in front of the only fresh air intake into a small space. A good example would be people that warm their car up for 5-10 minutes or more to drive it in the winter. That amount would at the very least make a person sick.