What is the minimum mounting height for the bottom of an electric arrow panel from the roadway?

The minimum mounting height for the bottom of an electric arrow panel from the roadway is established to ensure visibility and safety for both drivers and pedestrians. A height of 7 feet is typically recommended because this height reduces the likelihood of the panel being obscured by vehicles or other roadside obstacles. This mounting height ensures that the arrow panel is easily seen by approaching drivers, providing clear guidance regarding road conditions or changes in traffic patterns. Adequate visibility of these panels is crucial for maintaining safe traffic flow and preventing accidents, as they are often used in construction zones or areas requiring lane changes. Thus, mounting the panel at this height supports its functionality while adhering to regulations for traffic control devices.