As you drive along, you must be aware of the space cushion around your vehicle. You must have enough space between your vehicle and the vehicle in front to stop. If you have to stop you need to leave at least a car length (can see pavement under wheels) between your car and the car in front. You must not pass to closely to parked or moving cars. You must stay out of blind spots and keep others out of yours by adjusting your speed. Failure to do so can lead to a crash.