Also discussed here: 30% of city traffic is looking for parking? How do you know?(Parking Today, Sep. 17, 2013)
And here: The High Cost of Free Parking(734 pages, Donald C. Shoup, 2005)
Today we review an analysis of traffic congestion and the portion of that which was found to be cars cruising to find a parking space. Many quote parking guru, Donald Shoup, who said on average that the it was 30% but pointed out that there was a range from 8 to 74% and depended on time of day as well as location and how badly the parking spaces were managed. This leaves little doubt that pricing the parking rate charged dynamically by demand is an effective way to manage a sometimes scarce resource, as demonstrated in San
Francisco (SF Park).
“Sixteen studies conducted between 1927 and 2001 found that, on average, 30 percent of the cars in congested downtown traffic were cruising for parking.”
“The studies are selective because researchers study cruising where they expect to find it - on streets where curb parking is under-priced and overcrowded. “
“there were six measurements of the percentage of traffic that is seeking parking. The results ranged from 8 to 74%, for that average of 30%;
- “Detroit, USA 1927 A: DOWNTOWN ..22%
- Detroit 1927 B: DOWNTOWN … 34%.
- New Haven, USA 1960: CBDs of New Haven and Waterbury, Connecticut,… 17%.
- Freiburg, Germany 1977: CENTRAL Freiburg, .. 74%
- Cambridge, Mass., USA 1985: Harvard Square BUSINESS DISTRICT, .. 30%
- New York, USA 1993: MID-TOWN, West Side,..8%..”