14.6.3 Intersection Angle
The angle of the side roads to the main lanes of an RCUT intersection can have an impact on traffic operations and the conversion from a conventional intersection to an RCUT intersection. RCUT intersections at an acute angle (less than 90 degrees) generate left-turn movements more effectively with the major street as opposed to an obtuse angle (greater than 90 degrees).
demonstrates this concept.

Figure 14-21: RCUT Intersection Angle Considerations