Why Are Roads Slipperiest Right After It Rains?
1 Answers
Because dust and dirt on the road absorb rainwater and form a lubricating layer. Below is an explanation of why roads are most slippery after rain: 1. Principle: Roads become slippery due to reduced friction between tires and the road surface. Right after rain starts, the road absorbs some water, so there isn't excessive water on the surface, maintaining relatively good friction. Therefore, it's not extremely slippery. When rain continues and water accumulates most on the road, the friction coefficient is at its minimum, making this the most slippery condition. After the rain stops and water evaporates, there's less water, so the road isn't as slippery. 2. Precautions: (1) Slow down. On rainy days, wet roads significantly reduce tire traction. Slowing down and increasing braking distance ensures higher safety. (2) Avoid sudden steering. When friction between tires and the road decreases, controlling the vehicle becomes more difficult. Sudden steering may cause skidding due to improper handling. If the front wheels skid, turn the steering wheel in the opposite direction of the skid. If the rear wheels skid, reduce throttle and steer toward the skidding side. (3) Turn on fog lights. Rainy days bring mist and reduced visibility. Use fog lights to alert pedestrians and other vehicles, preventing accidents caused by poor visibility. (4) Never coast downhill in neutral. On wet roads, sudden acceleration or braking while going uphill can cause wheel spin. When going downhill, avoid neutral gear; instead, maintain an appropriate gear based on speed. (5) Regularly check tire tread. Excessively worn tires can lead to veering, longer braking distances, fishtailing, and increased skidding risk. Inspect tire wear regularly, and replace tires promptly when treads become shallow to reduce the likelihood of reduced friction and skidding.