When rain first starts
A free practice question for the Massachusetts permit test, with the answer explained.
Independent practice site. We're not the RMV and aren't connected to any government agency.
When is a road often the most slippery?
The rule
Slow down as soon as rain begins: many roads are slickest when the first rain mixes with road dirt and oil into a greasy film.
When rain first starts, it mixes with dirt and oil on the road into a greasy film. Slow down as soon as it starts to rain.
From the Massachusetts Driver's Manual, page 47. This question is our own wording of that rule. The handbook and the RMV have the final word.
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