J-Turn, R-Cut and protected turn lanes

The J-turn concept is a reconfiguration of the traditional intersection that is used in different parts of the country to improve traffic flow. DOTD has begun using this concept at specific locations across Louisiana.

The J-turn concept is a method that safely and efficiently manages high traffic volumes at intersections with multiple approaches along a divided highway. The J-turn functions by redirecting through- and left-turning traffic on the side street approach to turn right proceed to the nearby U-turn and then return to its original course.

Benefits of a J-Turn:

Improved Safety

J-turns reduce the risk of crashes and specifically the risk of severe crashes such as side-collisions or T-bone type accidents.

Less Travel Time
The J-Turn optimizes the capacity of our existing roadway and reduces wait time for left-turning traffic.

Economically Beneficial
From an economic view point, the superstreet provides the State with an effective tool for reducing congestion while at the same time reducing construction costs.

Project Documents
Left Closeup99 mb4/15/2014
jturn vs signal6 mb4/15/2014
J-Turn Through98 mb4/15/2014
J-Turn Through Comparison133 mb4/15/2014
J-Turn Left107 mb4/15/2014
J Turn Through Comparison Closeup117 mb4/15/2014
What is a J-Turn (edited)75 mb4/15/2014