The sharp variation of luminance at the entrance and exit of highway tunnel will cause the difficulty in visual adaptation of the driver, and even lead to traffic accidents.
公路隧道进出口亮度的急剧变化会造成驾驶员视觉适应困难，严重时甚至导致交通事故。
A ramp toll is a collection mechanism at an entrance or exit ramp to the highway and these do not concern us here.
匣道收费是一种在入口和出口的回道处设立的收费站，但是今天这个不在我们的讨论范围之列。
A scene told reporters that from Liaoyang, Anshan, Anshan south triage three crossings export vehicles streaming out of the car from Haicheng entrance into the southbound highway to continue.
一位现场负责人告诉记者，从辽阳、鞍山、鞍山南3个出口分流过路车辆，分流出去的车再从海城入口进入高速公路继续南行。
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