A commercial driver is planning and executing a long-distance freight trip during extreme summer temperatures. What is the correct chronological sequence of steps for managing tire pressure and thermal conditions from pre-trip preparation through the initial en-route stop?
- 1Inspect all tires and measure baseline air pressure with a calibrated gauge while tires are cold prior to departure.
- 2Begin driving and maintain a moderate speed to minimize heat buildup from tire flexing and road friction.
- 3Operate continuously until reaching the mandatory hot-weather safety interval of two hours or 100 miles.
- 4Pull over safely to inspect tires for excessive heat buildup and damage while strictly leaving valve stems untouched.
Cevap
The correct sequence begins with checking baseline cold tire pressure before departure, followed by driving at moderate speeds to reduce heat generation, operating up to the two-hour or 100-mile interval, and concluding with an en-route inspection where tires are checked for heat without bleeding air pressure.
In hot weather driving, the correct procedure flows logically from pre-trip verification to en-route monitoring. A driver must first check cold tire pressure before driving because heat expands air and alters readings. Next, driving at moderate speeds mitigates heat buildup during initial transit. After operating for two hours or 100 miles (the mandatory hot-weather inspection interval), the driver pulls over to inspect tire temperature and physical condition, ensuring that no air is bled from the tires.
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Anahtar Kavram
Hot weather tire management requires establishing baseline cold pressure, driving at moderate speeds to limit heat, stopping every two hours or 100 miles for inspection, and never bleeding air from hot tires.
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