Estimate the number of gas stations in SF city.
- Natalie Smith
Depends on
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Total population density
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Travel habits of the people. Miles per day
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Mileage per vehicle – take terrain into account. 10 miles a gallon
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% gas vehicles = 80%
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% people driving cars = 60%
population density = total population / total area = 1M / 100sqmiles = 10k
# gas vehicles per sq mile = population density * % driving cars * % gas vehicles = 10k * 0.6 * 0.8
Gas used per sq mile = # gas vehicles per sq mile * miles per day per vehicle / avg mileage.
= (10k * 0.6 * 0.8) * 20 / 10 = 10k gallons
#GS per sq mile = gas used / capacity per station = 10k / 10K = 1
#GS = GS per sq mile * total area = 1*100 = 100