If tubular markers are used at night or in high-speed conditions, what is the minimum required height?

In work zone safety, tubular markers play a crucial role in guiding vehicles and ensuring the safety of both motorists and workers. When used at night or in high-speed conditions, these markers must be of a sufficient height to be visible to drivers, especially in environments where visibility can be compromised. The minimum required height of 28 inches is established based on standards intended to enhance visibility and recognition at a distance, allowing drivers to react appropriately.

This height ensures that markers stand out against the backdrop of the surrounding environment and remain noticeable even when vehicles are moving at higher speeds. By meeting or exceeding this height requirement, work zone markers contribute to a safer roadway environment, reducing the likelihood of accidents and enhancing driver awareness of work zones.