What does I mean on an oversize permit?
Interstate. An Interstate highway: I-35 is Interstate 35. Some states drop the dash (I35) or put a space (I 26).
Also printed as IS, INTERSTATE.
On real permits
| Printed | Means | State |
|---|---|---|
| I-20 | Interstate 20 | Alabama |
| I-65 | Interstate 65 | Alabama |
| I-22 | Interstate 22 | Alabama |
| I-10 | Interstate 10 | Arizona |
| I-40 WB | Interstate 40, westbound | Arkansas |
| I-440 SWB | Interstate 440, southwest-bound | Arkansas |
| I-30 WB | Interstate 30, westbound | Arkansas |
| I-70 | Interstate 70 | Colorado |
| I-91 | Interstate 91 | Connecticut |
| I-75 | Interstate 75 | Florida |