Drivers in a Hurry. Drivers may feel your commercial vehicle is preventing them from getting where they want to goon time. Such drivers may pass you without a safe gap in the oncoming traffic, cutting too close in front of you. Drivers entering the road may pull in front of you in order to avoid being stuck behind you, causing you to brake. Be aware of this and watch for drivers who are in a hurry. Impaired Drivers. Drivers who are sleepy, have had too much to drink, are on drugs, or who are ill are hazards. Some clues to these drivers are Weaving across the road or drifting from one side to another. Leaving the road (dropping right wheels onto the shoulder, or bumping across a curb in a turn. Stopping at the wrong time (stopping at a green light, or waiting for too long at a stop. Open window in cold weather. Speeding up or slowing down suddenly, driving too fast or too slow. Be alert for drunk drivers and sleepy drivers late at night.