Civil Engineering Reference
In-Depth Information
Table 13.5
HERS value of travel time (1995 dollars) by bene
t category and vehicle type
$ per person-
hour
Vehicle class
Category
Small
auto
Medium
auto
4-tire
truck
6-tire
truck
3
4
axle
truck
4-axle
comb.
5-axle
comb.
-
On-the-clock
Labor/fringe
26.27
26.27
8.02
21.88
18.22
21.95
21.95
Vehicle
1.72
2.02
2.18
3.08
8.08
7.42
7.98
Inventory
0.00
0.00
0.00
0.00
0.00
1.65
1.65
Total
27.99
28.29
20.20
24.96
27.02
31.02
31.58
Other trips
Percentage of
miles (%)
90
59
0
0
0
0
0
Value
12.78
12.78
NA
NA
NA
NA
NA
Weighted
average
14.30
14.33
15.08
25.27
27.91
31.64
32.25
Source
Federal Highway Administration, The Highway Economic Requirement System: Technical
Report (updated 3/97)
Note
1995 dollars
[
17
]. These costs range from a low of $6.12 per person hour in Washington State
in 2000, to $13.45 per person hour for an average US urban area in 2002. To bring
these costs to current dollars they should be adjusted by the annual in
fl
ation rate.
Commercial Vehicles
The Highway Economic Requirements System (HERS) developed by the Federal
Highway Administration [
18
] divides the value of time for commercial vehicles into
two components: on-the-clock trips (trips drivers take as part of their work) and
other trips
The suggested weighed average costs are shown in
Table
13.5
. They range from about $14 per hour for small autos upward to more
than $32 per hour for
“
off-the-clock trips.
”
five axle combination
Not all truck drivers perceive the same value of time when they are caught in
traffic congestion.
“
There is a substantial difference in the value of time between
truck drivers who are independent operators (and hence internalize the full business
costs of their delays) and truck drivers who are paid an hourly wage [
19
]. Inde-
pendent operators were found to be more willing to pay tolls to avoid delay than
drivers who are paid an hourly wage
”
[
9
].
Some Key Factors Affecting the Value of Travel Time
The cost of delay time varies according to trip purpose, amount of delay, time of
day, a person
is income, and the conditions under which delay time is experienced
and thus valued [
20
].
'
