MP Josephine Teo Wants ERP to Force Motorists to Drive at 20KM/H? What a Dud!

I refer to the 10 Sept 2014 Straits Times report “When ERP rates rise, traffic speed goes up too”.

Minister of State Josephine Teo reportedly said that car speeds rose 7% per dollar increase in electronic road pricing (ERP). But that one dollar increase is how many percent?

The most common ERP rates are $0.50, $1, $1.50 and $2. Let’s say the average ERP rate is $1.25. An increase of $1 over $1.25 is 80% increase. 80% increase in ERP rate in return for a measly 7% increase in car speeds shows just how sorely ineffectively ERP is as a means of traffic congestion control.

Singapore’s much vaunted traffic congestion system turns out to be quite unspectacular after all. It doesn’t reduce congestion but merely transfers congestion from one road to another road and ceases to be effective when all roads lead to congestion.

If the optimum speed on arterial roads is 20 km/h to 30 km/hr, then might as well replace cars with electric bicycles or electric scooters?

This letter was written by Ng Kok Lim.
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