Guide to Calculating Mobility Management Benefits Victoria Transport Policy Institute
Examples The four examples described below demonstrate how mobility management program benefits can be evaluated using different perspectives and methods.
Community Benefit Perspective
Consider the evaluation of a program that shifts 50 typical commuters from driving to public transit. Start by surveying participants to determine the average number of days shifted, which may be a high as 200 commute days a year. If the average round-trip commute is 24 miles, the program might shift 240,000 (50 employees x 200 days x 24
miles) total peak period miles per year from driving to transit. Table 21 shows estimated benefits from reductions in ten costs. This indicates average daily savings to society of
$11.16 per commute day (46.5¢ x 24 miles), and total savings of $111,600 per year.
Benefits of SOV to Transit Mode Shift (Cents Passenger Mile)
Total Savings per Passenger Mile This example calculates savings for a shift from driving to bus transit.
A survey indicates that 25% of participants drive alone to transit stops (park-and-ride), 25% are driven (kiss-and-ride), 25% bicycle, and 25% walk. Table 22 summarizes the external costs of these access trips, assuming that a typical park-and-ride trip imposes external costs averaging $2.50, kiss-and-ride trips cost society an average of $1.25, and bicycling and walking each cost society an average of $0.50 per trip. Access trip costs should be subtracted from calculated savings, for a total community benefit of almost $88,000 ($111,600 - $23,625 = $87,975). If the program increases travel choices or service quality for existing transit users, these represent additional benefits.
Total of All Access Trips
Community Costs for Transit Access Trips
Cost Per Trip
Trips Per Year
Total Access Trip Costs