RL9. Access Control
The degree that access to abutting land is fully, partially, or not controlled by a public authority. Full access control provides access only at interchanges (interstate, etc.). Partial access control provides no private access. No access control permits private access (driveway, etc.).
Source: Obtained by linking Crash Location (C5) to the Roadway Inventory data.
- Full Access Control
- Partial access Control
- No Access Control
Highly correlated with crash rates and, therefore, useful in identifying high hazard locations. Important to guide future highway design and traffic control.