IMSA Work Zone Safety Practice Exam

The correct answer indicates that the minimum width required for tubular markers is 2 inches. This specification is crucial for ensuring that tubular markers are visible and effective in guiding traffic through work zones. The 2-inch width provides a balance between being compact enough for easy deployment while large enough to be noticed and recognized by drivers.

This dimension is defined in safety guidelines to ensure consistency in traffic control devices. A marker that is at least 2 inches wide enhances visibility, which is vital for preventing accidents in work zones. By meeting this minimum width requirement, the markers can better reflect light and stand out amidst other environmental factors, ensuring that they can be easily seen by approaching vehicles.

Properly sized tubular markers are an integral part of work zone safety, as they help delineate areas that are hazardous or require special attention from road users.