When does rainfall have the greatest impact on the start-up and braking of the tram?
Show the correct answer
Correct answer
A. In the initial phase.
Explanation
The question is about the moment when rain affects the starting and braking of a tram the most. Rainfall has the greatest effect in its initial phase - answer A.
Dust, grit and grease collect on dry rails. The first raindrops form a slippery sludge with them, which greatly reduces the grip of the wheels on the rails - the wheels slip more easily when moving off and lock when braking. Long-lasting rain washes this dirt away, so during drizzle after heavy rain (answer B) or in the final phase of rainfall (answer C) the rails are no longer so slippery. So at the start of rain, you drive with particular caution and brake earlier than usual.
Legal basis: Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)
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