Appendix D

Cost per Person Mile

1. Divide one mile by passenger mpg. This is passenger gallons per mile (gpm).
2. Multiply gpm by the cost of one gallon of gas. *

   Passengers per Car	Miles/Gallon	Gallons/Mile	Price of One Gallon Gas	Cost/Mile **
   1	26	0.0384	$1.50	$0.057
   2	52	0.0192	$1.50	$0.028
   3	78	0.0128	$1.50	$0.024

* This number is provided for simplicity in calculations. Insert current price.

** Note the cost decreases as the number of passengers increases.