Standard:
Table 2A-4. Use of Sign Shapes
Shape | Signs |
Octagon | Stop* |
Equilateral Triangle (1 point down) | Yield* |
Circle | Grade Crossing Advance Warning* |
Pennant Shape/Isosceles Triangle (longer axis horizontal) | No Passing* |
Pentagon (pointed up) | School Advance Warning Sign (squared bottom corners)* County Route Sign (tapered bottom corners)* |
Crossbuck (two rectangles in an "X" configuration) | Grade Crossing* |
Diamond | Warning Series |
Rectangle (including square) | Regulatory Series Guide Series** Warning Series |
Trapezoid | Recreational and Cultural Interest Area Series National Forest Route Sign |
* This sign shall be exclusively the shape shown.
** Guide series includes general service, specific service, tourist-oriented directional, general information, recreational and cultural interest area, and emergency management signs.
2 Del. Admin. Code § 2A.09