Night Rain on an Unlit Highway
You are driving home at 11 p.m. on an unlit four-lane divided highway. It has been raining for an hour, and standing water is pooling in the right lane. You are in the left lane at 65 mph with the posted limit at 65. Your headlights are on low beam. Ahead, you see the taillights of a slow-moving vehicle in your lane, and the glare of an oncoming vehicle across the median is beginning to wash out the road surface. Your wipers are on their fastest setting and still struggling. You feel a slight pull and a lightening of steering response.
1. What hazard does the lightening steering response indicate, and what should you do immediately?
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Lightening steering and a slight pull in standing water are the early signs of hydroplaning - the tires are riding up on a film of water rather than gripping the pavement.
The correct response:
- Ease off the accelerator smoothly to let speed bleed off and the tires regain contact.
- Hold the wheel steady and keep it pointed where you want to go.
- Do not brake hard and do not jerk the wheel - either can trigger a spin once grip returns unevenly.
Once you feel steering weight return, reduce speed well below the limit. Hydroplaning risk rises with speed, and 65 mph in pooled water is too fast regardless of the posted limit.
2. How should the rain, glare, and slow vehicle change your speed and lane choice?
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Conditions override the posted limit. The limit is a ceiling for ideal conditions; rain, darkness, and glare all reduce it.
- Speed: slow to a pace where you can stop within the distance you can actually see. At night in rain, that is often 45–50 mph or less, especially with oncoming glare.
- Lane choice: the right lane is pooling, but the left lane is where oncoming glare washes out the surface. Move right only where the water is shallow, and accept a lower speed there rather than staying left at high speed with degraded vision.
- Following distance: double it. Wet pavement lengthens stopping distance, and the slow vehicle ahead may brake unpredictably.
- Low beams: keep them on. High beams reflect off rain and glare back at you.
If glare makes the lane markings hard to read, slow until you can see them clearly. Speed is the variable you control.