Putting good economics into practice
San Francisco is about to spend $25 million to answer a simple question: How much should a city charge for parking?
The price should be cheap enough that most of the metered spaces and city parking lots are always almost full.
But it shouldn't be so cheap that spaces are entirely full, leaving drivers frustrated and adding to congestion as cars circle endlessly looking for a place to park.
"It's the 'Goldilocks' principle of parking spaces," said Donald Shoup, a professor of urban planning at UCLA who wrote a book called "The High Cost of Free Parking."
Shoup's work was the inspiration for a high-tech project San Francisco is launching today. Its aim: to set parking prices just right.
The system will use electronic sensors to measure real-time demand for parking spaces, and adjust prices accordingly. When there are lots of empty spaces, it will be cheap to park. When spaces are hard to find, rates will be higher.
"It's basic supply and demand," Shoup said.
The range in prices will be huge: from 25 cents an hour to a maximum of $6 an hour, according to the San Francisco Municipal Transportation Authority.
Eventually, drivers will be able to find open parking spaces by going online, checking their mobile phones or reading for new electronic signs that will be posted throughout the city.
Will this work? I'm not sure. It seems like a great idea, and for $25 million, I sure hope it does work. But I'm not convinced that people will actually have access to accurate pricing information in a way that will allow them to make rationale decisions. How many electronic signs are they going to have? Will the price be the same all over the city? There are just too many questions. If you leave your house in the morning, how will you know what the cost of pricing will be when you get to where you're going? Are you supposed to check before you leave? Will people be holding up their iPhones and driving around looking for the cheaper spots?
If the current cost of pricing was somehow integrated into the dashboard on vehicle GPS, then you'd really have something. As it stands right now, it just seems like this new system is going to be a total disaster. People are risk averse. They don't like change. I have a feeling that most people will hear, "between 25¢/hr and $6/hr," and think, "I'm not paying $6/hr to park—that's too much."
Here's an idea: Let people purchase a small device they can stick on their dash that shows the expected price of parking, and lets them pay for said parking automatically, without having to go to the machine. Turn city parking into a completely seamless experience that provides individuals with perfect information at all times. Now you've got a mechanic that can allow basic supply and demand to function properly.