Road marking plays a very important role in channelization, lane separation and diversion of traffic flow, and also has the effect of beautifying the road, so the design and construction of road marking quality problems reflect its impact on traffic safety.

The influence of road marking on traffic safety mainly includes the following four aspects:

(1) When the accuracy of line lofting is not enough, vehicles running in different lanes may have side collision.

(2) when the marking edge is not neat, the thickness is not uniform, there are bubbles, burr cracking, will affect the clarity of the reflective marking at night.

(3) when the sprinkling quality and quantity of glass beads do not meet the requirements, such as uneven sprinkling, settlement is difficult to control, will greatly reduce the night reflective effect.

(4) When the adhesion between the marking line and the road surface is not enough, the marking line will fall off, resulting in induced vision discontinuity, especially at night, which may cause road traffic accidents.

To sum up, the road marking and painting project of traffic facilities must ensure smooth alignment and be consistent with the road alignment to ensure a good day-night visual induction effect. At the same time, it is necessary to achieve the geometric size of the marking line and have enough adhesion with the road surface.