Question 4338
The first rains make roads more slippery because...
- The initial volume of rainfall concentrates in certain areas, forming large puddles.
- The water mixes with dirt, oil, and other substances on the asphalt, creating a slippery layer on the road surface.
- The first raindrops are denser and cause worse drainage.
Show answer and explanation
Correct answer: The water mixes with dirt, oil, and other substances on the asphalt, creating a slippery layer on the road surface.
After days without rain, dust, oil, diesel fuel, and rubber residue build up on the asphalt. The first drops mix with this dirt and form a thin, very slippery sludge until the rain washes it into the roadside ditches. Neither the density of the drops nor puddles explains this initial danger.