Important Note
Arizona's Functional Classification settings are dictated by the Arizona Department of Transportation (ADOT), at the request of the local jurisdictions. If you do not agree with our FC levels, please petition ADOT to change the rating they've assigned.
Do NOT make random changes on your own.
Locking Standard
In Arizona we have a set minimum standard for locking roads based on segment type. Any road of a certain segment type must be locked at least to the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.
A great time to implement these locks is while bringing the road types of an area into compliance with the current US road type standards (FC and highway systems). Lock the roads based on type after they've been set to current US road type standards.
| Segment Type | Default locks |
|---|---|
| Freeway | 5 |
| Ramp | Highest rank of connected segments |
| Major Highway | 4 |
| Minor Highway | 3 |
| Primary Street | 2 |
| Street | 1 |
| • • • • Ferry • • • • | 5 |
| |-|-|-|-|-|-|-|-|-| Railroad |-|-|-|-|-|-|-|-|-| | 2 |
Additional Guidance
See Arizona/Major roads for additional guidance in procedures specific to editing Major Roads in Arizona.