In freeway design, what is weave length?

In freeway design, what is weave length?

• A. The width of the weaving lane.
• B. The distance over which vehicles merge and diverge; should be long enough to minimize conflicts.
• C. The distance between exits.
• D. The length of the on-ramp queue.

Answer: (B)

Weaving length is the distance along a freeway where entering traffic from an on-ramp must merge with the mainline and exiting traffic toward an off-ramp must diverge, all within the same roadway segment. It is the stretch that must be long enough to allow these merging and diverging maneuvers to be completed safely at the design speed, reducing conflicts between competing traffic streams. So this length is not the width of a weaving lane, not the distance between exits, and not the length of the on-ramp queue. It specifically describes the shared stretch where merging and diverging flows interact and the space needed to do those transitions safely.

Weaving length is the distance along a freeway where entering traffic from an on-ramp must merge with the mainline and exiting traffic toward an off-ramp must diverge, all within the same roadway segment. It is the stretch that must be long enough to allow these merging and diverging maneuvers to be completed safely at the design speed, reducing conflicts between competing traffic streams.

So this length is not the width of a weaving lane, not the distance between exits, and not the length of the on-ramp queue. It specifically describes the shared stretch where merging and diverging flows interact and the space needed to do those transitions safely.