FEBRUARY 6 2003
Figure 5.5. Sign Assembly Sequence.
5.18. Direction Sign Type D1.
5.18.1. Information and Sizes. No more than four destination messages are permitted on a sign.
The sign panel is normally 2 700 mm (9"- 0") wide, but if the messages are short, the width of
the sign may be reduced by 150 mm (6") increments, as appropriate. A typical sign with shorter
messages is shown in Figure 5.8. In this case the width of the sign has been reduced to 2 400 mm
5.18.2. Visibility. Use a white border on the sign panel and rules between the destinations to
increase night time visibility.
5.18.3. Graphics. Graphics should appear on only one side of the sign since the sign will be
placed in advance of an intersection and will be viewed by traffic moving in one direction only.
5.18.4. Colors. White letters, arrows, rules and borders (reflectivity mandatory) on standard
green background (reflectivity desirable). Most Air Force installations currently use standard
brown as the background color. To maintain visual consistency, individual sign replacements or