Driving in Very Hot Weather
Driving in Very Hot Weather tests heat-related equipment failure and tire/brake awareness. The exam expects you to monitor gauges and tires and to avoid burns and fires.
Tires and engine
Heat raises tire pressure and risk of tread separation. Check pressure when tires are cool; do not bleed hot tires. Watch the temperature gauge; if it climbs, stop safely and let the engine cool. Never remove the radiator cap while the engine is hot-release pressure slowly and use protection. Check coolant and belts. Hot pavement can soften tar and reduce traction.
Brakes and fire risk
Long braking in heat can fade brakes or overheat tires. Use engine braking and stop to cool. Keep the vehicle clean of grease and paper; check for leaks. If a fire starts, stop, shut off the engine, get everyone out, and call for help; do not open the engine compartment fully if flames are present.
Worked example
The temperature gauge rises on a long climb. Reasoning: continuing can warp the engine or cause a fire. Turn off accessories, reduce load if possible, and stop at a safe place to let it cool.
Traps
Opening a hot radiator, ignoring rising temperature, and bleeding hot tires are dangerous errors. Heat problems escalate quickly; act early.