It is important for you to get off the road as soon as possible if you are having any type of emergency. The best place for you to park is behind a guardrail. Get as far away from the road as you can. You will also need to GPS your location. It will be easier for the nearest highway patrolman or truck driver to get to you. If you cannot get off the road, then you will need to call 911. Turn the flashers on.
Keep in mind that the most common roadside emergencies are flat tires, battery failures, keys locked in the car and empty gas tank. That is why you should leave the house without everything that you will need in case an emergency occurred. This includes things such as blankets, first aid supplies, car battery, jumper cables, reflective warning triangles, non-perishable food and water.