Also called safety grooving, this simple, yet lifesaving, process inserts long, shallow channels into pavement on runways and roads.

• 这种沟槽也称为安全槽，这种结构非常简单，但是能够救人一命，通过在飞机跑道和普通道路上嵌入窄条形沟槽，来发挥作用。