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Guide to Calculating Mobility Management Benefits Victoria Transport Policy Institute

4.

Oil-Smart Commute Performance Test Example

The Bullitt Foundation’s Oil-Smart campaign encourages use of alternative travel modes.

Thousands of Puget Sound area residents participate each year. During four days in March, 1994, a sample of the total Oil-Smart participants recorded their travel. The foundation surveyed a total of 62 trips, about half of which consisted of two links, such as walking to a transit stop, and analysed a total of 92 links. Table 23 summarizes the distances, times, costs, and savings for one day’s trips.

1

Walk

2.2

41

$2.76

$0.01

$2.77

$4.58

2

Bike

2.75

10

$0.96

$0.06

$1.02

$8.07

3

Bike

3.5

16

$1.43

$0.08

$1.51

$7.10

4

Van Pool Driver

2.7

18

$2.99

$0.28

$3.27

$3.57

5

Van Pool Passenger

2.7

18

$1.95

$0.29

$2.24

$5.63

6

Van Pool Passenger, Walk

2.8

24

$2.30

$0.29

$2.58

$6.01

7

Van Pool Passenger, Walk

2.8

24

$2.30

$0.29

$2.58

$6.01

8

Van Pool Passenger, Walk

2.8

24

$2.30

$0.29

$2.58

$6.01

9

Van Pool Passenger, Walk

2.8

24

$2.30

$0.29

$2.58

$6.01

10

Bus Rider, Walk

3.2

35

$3.92

$0.96

$4.88

$0.35

11

Bus Rider, Walk

2.5

30

$3.65

$0.85

$4.50

$1.12

12

Car Pool Driver

3.4

15

$2.81

$0.61

$3.42

$3.28

13

Car Pool Passenger, Walk

3.3

20

$2.19

$0.62

$2.81

$4.49

14

Car Pool Passenger, Walk

3.3

20

$2.19

$0.62

$2.81

$4.49

15

SOV Driver

3.4

10

$3.00

$2.06

$5.06

$0.00

Totals

44.15

329

$37.05

$7.56

$44.61

$66.72

One test involved short (less than 1-mile each way) Saturday afternoon shopping trips. Short urban automobile trips are relatively inefficient due to cold starts and high parking costs. The study used Urban Peak cost values since traffic congestion is a problem at that time, and doubled automobile user costs, parking subsidies, and environmental impacts to reflect higher costs per mile for such short trips.

Table 24 summarizes trip statistics. SOV drivers impose about 37% of their costs on society, averaging $0.62 per mile for the trips in this study. The large portion of external costs incurred by SOV drivers indicates that this mode is highly subsidized. This is more than double the external costs of transit, van and car pooling, and many times higher than bicycling or walking. Bicycling and walking impose minimal external costs. Walking has the second highest total cost per passenger mile (after driving alone) due to travel time costs. However, as described earlier, this is based on average values of time which may not apply when users are able to decide which trips they will shift to alternative modes.

ance

Time

Cost

Cost

Total Cost

SOV

miles

minutes

per trip

per trip

per trip

per day

Table 23

Capitol Hill to Pioneer Square Trip Summary (Urban Peak Costs)

Mode

Dist-

Travel Internal External

Savings Over

33

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