If you find yourself far from assistance with no communications switch on your emergency flashers and wait until someone stops. Ask passers by who might stop to call help for you. If you have a flat tire in a dark or uncomfortable location, drive slowly to the nearest service station or public place. Even if you ruin the tire, you have maintained your personal safety. Avoid short cuts that takeing you through unfamiliar areas.
Many people are suspicious of being stopped by unmarked police vehicles.
Beware of men in civilian clothing who flash what appears to be a police badge. Don't get out of your car. Instead roll your window down slightly and request a uniformed officer in a marked car respond before you comply with the requests made. If your car is rammed from behind and the hit seems deliberate, always stay in the car with the doors locked. Wait for the police to arrive.