At what height must temporary signs be mounted above the traveled way?

Temporary signs must be mounted at a height that ensures visibility for drivers while maintaining safety for pedestrians and workers. The standard height for mounting temporary signs above the traveled way is typically 7 feet from the bottom of the sign to ensure that vehicles can pass beneath them without obstruction.

Option A suggests a height of 1 foot, which is significantly lower than standard practices. Signs positioned at this height would likely be obstructed by vehicles, significantly increasing the risk of accidents because drivers may not see the signs in time to react effectively.

Therefore, understanding the required mounting height helps ensure that temporary signs provide adequate guidance and warnings to all road users, improving both safety and compliance with traffic regulations.