Abstract

The study is concerned with investigating delays and queues in both flow directions of exclusive U-turn median openings zone. Note that other turning movements are not allowed at exclusive U-turn median openings zone. Travel time delay study was carried out at four sites in Johor, Malaysia. Resultsshow that average delay of 5s can be expected at divergingsection and no significant delay to conflicting traffic flows at the merging section. Delayswere recorded for vehicles waiting to merge at the exit lane. The paper concluded that weaving may be called to account for travel time delay at the diverging section. And also that since vehicle at the merging section must give way, there will be no delay to conflicting traffic flow.

Keywords:

Delay, diverging, flow, merging, median opening , speed, travel time, U-turn,

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Competing interests

The authors have no competing interests.

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