Hazard Awareness
Hazard awareness is the eighth domain of the Louisiana CDL General Knowledge exam. It tests whether you can read the road ahead, predict what other drivers may do, and choose a response before a hazard becomes an emergency.
Scan and predict
Use a systematic search: identify hazards, predict the worst reasonable action, decide on a response, and execute early. Ask “what if” questions-what if that car pulls out, what if the light changes, what if the load shifts? Look for clues such as brake lights, turn signals, wheel movement, and drivers looking down at phones.
Road and weather hazards
Construction zones bring narrowed lanes, workers, and sudden stops. Standing water can cause hydroplaning; fog reduces visibility; ice forms first on bridges and shady spots. Adjust speed and following distance before the hazard, not after.
Other road users
Watch for pedestrians, cyclists, motorcycles, and aggressive drivers. A motorcycle's small profile makes speed and distance hard to judge. Give cyclists room and expect them to swerve around debris.
Worked example
A ball rolls into the road from between parked cars. The driver immediately covers the brake and slows, expecting a child to follow. The reasoning: a rolling ball is a classic predictor of a child chasing it; waiting to see the child reduces reaction time.
Traps
Assuming other drivers see you, focusing only on the vehicle ahead, and failing to adjust for weather or construction are common errors.