How does the presence of leaves in the trackway affect the behaviour of the tram.

Explanation

Correct answer: It reduces grip.

Leaves, especially when wet and crushed, form a slippery layer on the rails which acts like a lubricant. This causes a significant reduction in friction between the tram's steel wheel and the rail. As a result, the adhesion of the rail vehicle decreases, which increases its braking distance and can make moving off more difficult.

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