Case B3-Crossing Maneuver from Minor Road

1. Case B3-Crossing Maneuver from Minor Road By Alfredo Cabrera Nathan Mustafa Sterling Mosley

2. Intersections Involving Case B3 • In most cases, the departure sight triangles for left and right turns onto the major road as in Case B1 (Left Turn from the Minor Road) and Case B2 (Right Turn from the Minor Road) will provide more than adequate sight distance for the minor road vehicles to cross the major road. However there are intersections that may fall under Case B3.

3. Recommended Intersections Involving Case B3 • Where Left and/or Right Are Not Permitted from a Particular Approach and the Crossing Maneuver is the Only Legal Maneuver • Where The Crossing Vehicle Would Cross the Equivalent with of More Than Six lanes • Where Substantial Volumes of Traffic and Steep Grades that Might Slow the Vehicle

4. Where Left and/or Right Are Not Permitted from a Particular Approach and the Crossing Maneuver is the Only Legal Maneuver Example

5. Where The Crossing Vehicle Would Cross the Equivalent with of More Than Six lanes Example

6. Where Substantial Volumes of Traffic and Steep Grades that Might Slow the Vehicle Example

7. Example Intersection Layout

8. 35 MPH Major Road and Stop Minor Road

9. Intersection Layout Minor Road Major Road 44.5

10. Calculated Major Road Sight Distance vs. AASHTO Design Major Road Sight Distance