美国加拿大几乎所有的省和州都有Move Over Law
这是法律,大意就是遇到路边停着的紧急车辆,包括但不限于警车,消防车,救护车,拖车,等等
安全情况下必须换道,与紧急车辆保留至少一根车道的距离
如果不能换道,必须有明显减速,且谨慎观察通过的动作
具体看安省政府官网链接
http://www.mto.gov.on.ca/english/safety/emergency-vehicles.shtml
Approaching a stopped emergency vehicle
"Slow Down, Move Over": If you see an emergency vehicle or a tow truck with its amber lights flashing stopped facing the same direction you are going, slow down and pass with caution.
If the road has two or more lanes, you must leave a lane of space between you and the emergency vehicle, if you can do so safely.