What must be the width of the arrowhead on apparatus mounted boards?

The width of the arrowhead on apparatus mounted boards is specified as 24 inches to ensure visibility and clarity in emergency situations. This size is recommended to be large enough for drivers and pedestrians to easily recognize the direction and purpose of the emergency vehicle. Proper proportions and visibility can help prevent accidents and improve response times by providing clear guidance on how to navigate around emergency vehicles.

The choice of 24 inches balances the need for visibility with practical considerations of space and mounting on various types of apparatus. Larger arrowheads may not be feasible due to space restrictions, while smaller arrowheads may diminish visibility, especially in low-light conditions or from a distance. Thus, the 24-inch specification serves to enhance safety and communication on the road during emergency responses.