Parking Savings From TaaS in Puget Sound

	A	B	C	D
1			Notes	Source
2	WA State Registered vehicles 12/31/16	7,325,670	Excludes motorcycles	http://www.dol.wa.gov/about/docs/2016-CY-stats-at-a-glance.pdf
3	WA State Population, 4/1/17	7,310,300		https://ofm.wa.gov/sites/default/files/public/legacy/pop/april1/ofm_april1_press_release.pdf
4	Vehicles per capita	1.002	Calculated
5	Puget Sound region population, 2017	4,066,800		https://www.psrc.org/rdp-population
6	Puget Sound population as % of WA	55.6%	Calculated
7	Registered vehicles in Puget Sound region	4,075,350	Calculated
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9	Potential drop in existing fleet size by 2030	40%	We assume half of RethinkX; page 34 says "over 80%"	RethinkX
10	Reduction in vehicles	1,630,140	Calculated
11	Parking spots per vehicle	4	"on average, three non-residential parking spaces exist for every car in the United States" + one residential	http://news.mit.edu/2012/parking-lot-redesign-0313
12	Average area car occupies (sq ft)	325	Sightline's 2013 estimate informed by Donald Shoup's The High Cost of Free Parking.	http://www.sightline.org/2013/08/08/park-place/
13	Area available to repurpose (sq ft)	2,119,182,260	Calculated
14	Square feet per acre	43,560	Google search
15	Area available to repurpose (acres)	48,650	Calculated
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17	Square feet per square mile	27,880,000	Google search
18	Seattle Assessed Value of Land for 2017 Taxes	$75,970,549,875	Assessed values typically lag market values in rising markets like Seattle's	http://www.kingcounty.gov/depts/assessor/Reports/statistical-reports/~/media/depts/assessor/documents/AnnualReports/2017/TaxStats/17CityRealProp.ashx
19	Seattle 2010 Land Area in Square Miles	83.94		https://www.census.gov/quickfacts/fact/table/seattlecitywashington,US/PST045216
20	Assessed Land Value per Square Foot	$32.46	Calculated. This is a conservative estimate of the value per square foot of parking. A 2013 Sightline report on parking used $50 per square foot.	http://www.sightline.org/2013/08/08/park-place/
21	Value of land available to repurpose	$68,794,203,260	Calculated
22	Value per parking space	$10,550	Calculated. As evidence of conservative nature of this estimate for the value of each parking space, Sound Transit spent over $100,000 per space for park and ride in Kent WA	https://www.seattletimes.com/seattle-news/transportation/100000-per-parking-space-costs-soar-for-sound-transits-kent-park-and-ride-garage/
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