|As of Dec. 2015 all Montana's Secondary Highways "SR-x" are to be labeled "S-x" in accordance with MDOT regulations and Waze Wiki highway naming.|
Montana observes the following locking standards on the following types of road segments. All roads must be locked at least to the minimum level stated. If needing a segment unlocked or locked to a </> level please use the Unlock and Update Request forum.
^1 Freeways may be locked at a 4 or 5.
- Limitation on U-turns -- turning on curve or crest of grade prohibited.
An operator of a vehicle may not turn the vehicle to proceed in the opposite direction:
- unless the movement can be made safely and without interfering with other traffic; or
- upon any curve or upon the approach to or near the crest of a grade where the vehicle cannot be seen by the operator of any other vehicle approaching from either direction within 500 feet.
See Montana/Major roads for guidance in Montana that may not be universal to all other states and territories.