What is the minimum mounting height for a directional arrow board from the roadway?

The minimum mounting height for a directional arrow board from the roadway is 7 feet. This height ensures that the board is visible to approaching drivers while minimizing the risk of obstruction from vehicles and other roadside elements. Mounting the board at this height helps to effectively convey messages to motorists about traffic patterns, especially in situations where detours or lane changes are necessary.

It is imperative to adhere to these standards to maintain safety on the roadways, as boards positioned too low may not be seen until it is too late for drivers to respond appropriately. The requirement for 7 feet also takes into account the need for the board to be clearly visible without being obscured by the average height of vehicles, ensuring that messages can be communicated effectively.