Metering is always preferable to bus lanes or congestion, and two phase intersections and road pricing are needed for efficiency

Submitted by john on Sun, 15/12/2019 - 20:14
mode change

My bleeding heart says why should the poor people be subject to delay? But give me a break, these people are currently riding the bus.

Metering and 2-phase intersections will increase capacity. Queues will clear quicker and travel times reduce. Then demand will increase by about 2% for each travel time minute saved. Because of metering and 2-phase intersections, more and more mode change trips occur. Trips will be made by car instead of being on the bus, on bikes, by walking, made at other times, or not made at all. These mode change trips are of low marginal value to the maker to be made by car.

With 2Pi, for tolled queue jumping, the free queue travel time for the trip increases by 7 minutes for 10% of traffic, and for the tolled 90% of traffic reduces by 8 minutes. This is a net benefit and it provides a new express travel option for essential trips. Note that there will still be 28% more trips, from mode change, than currently exist, but an additional 11% will have gone back to their previous mode. This puts the 10% proposed to be used for demand management, into perspective. The target is a reliable 8 minutes, instead of the current 40 minutes.

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