| 2003 OM Sign Code | old Sign Code | Legend |
Size (width x height) |
Remarks | |
| R-1 |  |
18x18 |
48x48 |
White on Red | |
| 24x24 | |||||
| 30x30 | |||||
| 36x36 | |||||
| R1-2 | R-2 |  |
24x24x24 | 60x60x60 | White on Red with Red text |
| 30x30x30 | |||||
| 36x36x36 | |||||
| 48x48x48 | |||||
| R1-2A | R-2A |
|
24x18 | Black on White | |
|
R-1A |
 |
12x6 | White on Red
Sign may also read 3-WAY |
||
| 18x9 | |||||
| 24x12 | |||||
| R-1B |
|
18x6 | White on Red | ||
| 24x9 | |||||
| 30x12 | |||||
