Yesterday’s post mentioned Portland’s claim that it managed to save 1.75 million gallons of fuel per year by coordinating 135 traffic signals. Bojack is rightly skeptical about this claim, so I decided to track it down.
The claim sounds suspicious to the Antiplanner because San Jose coordinated 223 signals in 2003 and claimed that it saved 471,000 gallons of fuel per year. Your mileage may vary, but it seems hard to believe that coordinating roughly half as many signals in Portland could produce nearly four times the benefits.
