Bus vs light rail for Wellington

Tony Randle writes in the Dom Post:

The recently released spine study recommendations on expanding to and through the Wellington CBD found a dedicated Bus Rapid Transit (BRT) option is the best long-term approach compared to bus priority or changing from buses to light rail.

Since then, we have heard mostly the anguished protests of light rail supporters who dispute this recommendation.

I presume these supporters do not plan to pay for the massive cost of light rail themselves!

The transport models for Wellington show the BRT option will increase public transport trips from south and east Wellington by 8.5 per cent while light rail will barely make a 1 per cent improvement.

It reminds me of the proposal to increase train capacity on one of the Wellington bus lines. It would have cost $100 million and only removed 80 cars a day at peak time. I joked it would be cheaper to buy 80 motorists a helicopter!

A key reason light rail fails is the need for thousands of CBD- bound commuters to transfer between buses and light rail at Kilbirnie or Newtown, compared with BRT where they will complete the journey with a single bus trip.

That is a strength of our bus system – not having to swap transport modes.

In economic terms, the BRT option has $90 million in public transport benefits against only $30m for the more expensive light rail option.

The Benefit Cost Ratio of BRT is 0.87 compared to just 0.05 for light rail (a benefit cost ratio of 0.05 is a total waste of money).

Julie-Anne Genter and the Greens correctly point out that some of the roads of national significance have a BCR of less than 1, which makes their economic value debatable. Surely Julie-Anne and the Greens would agree that a transport proposal with a BCR of 0.05 is barking mad!

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