What condition should drivers be especially cautious of when descending a steep slope?

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When descending a steep slope, drivers should be particularly cautious of large vehicles. This is because large vehicles, such as trucks and buses, carry significant weight, and their ability to control speed and stop can be greatly affected by gravity. As these vehicles descend a slope, they can accumulate speed rapidly, which may lead to loss of control or difficulty in stopping safely, especially if their brakes overheat or are not functioning properly.

Additionally, large vehicles have a longer stopping distance compared to smaller vehicles. In a situation where the driver of a large vehicle misjudges their speed or the road conditions, it can pose a danger not only to themselves but also to other road users. Therefore, vigilance around large vehicles on steep slopes is crucial to ensure safety for all drivers and pedestrians in the vicinity.