Purpose of Traffic Signs

Traffic signs are devices placed along, beside, or above a highway, roadway, pathway, or other route to guide, warn, and regulate the flow of traffic, including motor vehicles, bicycles, pedestrians, equestrians, and other travelers.

Signs should only be placed only where warranted by facts and engineering studies.

Signs should be placed as necessary for safety and proper regulation of traffic. However, the use of too many signs in a given location may reduce the effectiveness of all the signs at that location.

Signs, like any other traffic control device, must meet five fundamental requirements:

  • Fulfill a need
  • Command attention
  • Convey a clear, simple meaning
  • Command respect from travelers
  • Give adequate time for proper response