At what angle must barricade stripes slope downward according to regulations?

The regulations state that barricade stripes must slope downward at an angle of 45 degrees. This angle is specifically chosen for optimal visibility and recognition. A 45-degree angle strikes a balance between visibility and the practical aspects of installation, ensuring that the stripes are easily noticeable without being overly steep, which could reduce their effectiveness.

Barricade stripes that are too shallow may not be as visible to oncoming traffic, while an angle steeper than 45 degrees could create confusion or be misidentified as a different type of cautionary sign. Therefore, the established standard of a 45-degree downward slope is designed to maximize safety and awareness for both pedestrians and vehicle operators in various environments.