What does RP mean on an oversize permit?
Reference point. A reference point, measured from the previous milepost marker; Colorado and Utah print these. On some lists RP means a ramp instead, as in INT 9 RP.
On real permits
| Printed | Means | State |
|---|---|---|
| RP 258.7 | Reference Point 258.7. CDOT defines a reference point as a physical location measured from the preceding milepost marker. | Colorado |
| Exit 259, RP 258.7 | The Morrison exit on I-70. The exit number (259) and the reference point (258.7) are not the same number. | Colorado |
| RP 24.8 | A mile point along that highway, as UDOT's restriction list writes it (the list does not spell out RP) | Utah |