Right-in/right-out
From Wikipedia, the free encyclopedia
Right-in/right-out (RIRO) or left-in/left-out (LILO), corresponding to the side of the road that traffic drives on (RIRO for right-side driving), is a type of access on a divided highway that allows access to only the side of the highway closer to the intersecting road. It can be an isolated feature for road safety along an otherwise-normal road, or can be an inexpensive method of converting a surface road to near-freeway standards. In the latter case, traffic going between the side road uses an adjacent interchange to U-turn.
[edit] Examples
- In Canada, Highway 115 and parts of Highway 11 between Bracebridge and Huntsville in Ontario have RIRO access in various sections. There are no breaks in the median, and to turn around one must exit the highway at an interchange or special turn-around ramp and re-enter the highway in the opposite direction. (The RIRO sections on Highway 11 are expected to be upgraded to a full freeway in the future.)
- In the United States:
- Many roads in New Jersey, including parts of U.S. Route 9 and Route 17, have RIRO access.
- Ocean Parkway on Long Island in New York is primarily a RIRO-access road.
- U.S. Route 90 Alternate (South Main) in Houston, Texas has property access on one side of the median, but all crossings are grade separated, with access to the roadway provided only by interchanges.
- The Bend Parkway north of the Powers Road intersection, has RIRO access.
- In Hong Kong
- Much of the portion of Route 1 between the Cross-Harbour Tunnel and the Lion Rock Tunnel.
- Tuen Mun Road through the central part of Tuen Mun New Town
- Connaught Road on Hong Kong Island.
- Portions of Prince Edward Road between Mong Kok and the old Kai Tak Airport
