Basic Considerations

The following five basic considerations are used to ensure that the above requirements are met:
  • Design.
    Detailed drawings of standard signs and alphabets are shown in (SHSD).
  • Placement.
    Signs should be appropriately positioned with respect to the locations, objects, or situations that they apply to.
  • Operation.
    Regulatory, warning, and guide signs must be retroreflective to show the same shape and similar color both day and night.
  • Maintenance.
    All traffic signs should be kept properly positioned and legible, and should have adequate retroreflectivity.
  • Uniformity.
     Uniformity of signs aids recognition and understanding, thereby reducing perception and reaction time and simplifying the road user’s tasks.