Study on feasibility of reverse flow on PIE, KJE

It will help LTA decide on system that allocates lanes as per traffic demand over course of day

An advanced engineering study is looking into the feasibility of having reverse-flow traffic schemes on the Pan-Island Expressway and Kranji Expressway. PHOTO: ST FILE
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Retired traffic planner Joseph Yee said such a scheme can be challenging over a long stretch of highway, noting that there will be a period when signal lights on both ends will have to be red to facilitate a safe switchover.

"Nicoll Highway is short, so the all-red time was short," he said. "The longer a road is, the longer the all-red. And the longer the all-red, the more unacceptable it becomes for road users."

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A version of this article appeared in the print edition of The Straits Times on April 20, 2019, with the headline Study on feasibility of reverse flow on PIE, KJE. Subscribe