What does the "square" painted on the expressway mean?

The "diamond box" is called the crosswalk warning line to remind drivers to slow down. This white diamond sign is called crosswalk warning sign, which is usually set 30 to 50 meters away in front of crosswalk. Its function is to remind drivers to slow down and ensure pedestrians to pass the crosswalk safely.

Extended information refers to traffic facilities that guide, restrict, warn or indicate traffic with patterns, symbols, numbers and words.

Generally set on the roadside or above the road, reflecting the effectiveness of traffic safety regulations. Conducive to regulating traffic flow, diverting traffic and improving road capacity; Predict road conditions and reduce traffic accidents; Save energy, reduce public hazards and beautify roads.

Road traffic signs are divided into main signs and auxiliary signs.

The main signs are divided into warning signs, prohibition signs, indicating signs, guiding signs, tourist area signs and road construction safety signs.

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