costs & revenues associated with overweight truck operations in indiana
DESCRIPTION
Costs & Revenues Associated with Overweight Truck Operations in Indiana. Tommy Nantung INDOT Research & Development Division July 22, 2014. Study Objectives. Main objective: Generate information to assist INDOT in updating or streamlining its permitting process for overweight (OW) trucks - PowerPoint PPT PresentationTRANSCRIPT
Costs & Revenues Associated with Overweight Truck Operations in
IndianaTommy NantungINDOT Research & Development Division
July 22, 2014
Study Objectives
Main objective: Generate information to assist INDOT in
updating or streamlining its permitting process for overweight (OW) trucks
Intended to be based on data analysis pertaining to: Cost of asset (pavement & bridge)
damage due to OW trucks, Enforcement costs and
recommendations, Revenue trends
Background Information On one hand…
INDOT needs highway operations policies that retain/attract industry even those that involve haulage of large loads, thereby enhancing economic development
On the other hand… INDOT seeks policies that:
protect billions of taxpayer $ invested in highway infrastructure
do not lead to premature/accelerated deterioration of such assets through excess loading or undue safety hazard
Background Information
Traffic Load vs. Facility Damage
Facility Damage
vs. Repair Expenditur
e
Repair Expenditu
re vs. Permit/License
Fees
Estimating the Cost of Pavement Damage due to OW Trucks
Route Type
MPDC ($/ESAL-mile)Load Share(85%)
Non-load Share (15%)
Total
Interstate
0.006 0.001 0.007
NHS Non-IS
0.055 0.010 0.065
Non NHS 0.218 0.038 0.256
Mean 0.093 0.016 0.109
Interstate NHS Non-IS Non NHS Mean0.00
0.05
0.10
0.15
0.20
0.25
0.30
Non-load Re-lated PDC
Load-related PDC
Route Type
Marg
inal P
DC
($
/ES
AL-m
ile)
Results for OW Trucks with GVW 80,001 -108,000 lbs
4-Axl
es
5-Axl
es
6-Axl
es
7 & M
oreA
xles
Avera
ge fo
r 80-
108K
0.00
0.35
0.70
1.05
1.40
0.03 0.01 0.00 0.02
0.28
0.130.04
0.15
1.12
0.53
0.14
0.590.48
0.22
0.06
0.25
IS NHS Non-IS Non NHS Avg
Marg
inal P
DC
($
/ES
AL-m
ile)
Permit fee at time of the study (35 cents)
4-Axles 5-Axles 6-Axles 7-Axles 8-Axles 9 & More Axles
Avg. 108-150K
0.00
0.60
1.20
1.80
2.40
3.00
3.60
0.08 0.04 0.03 0.01 0.01 0.00 0.03
0.75
0.400.23
0.12 0.130.03
0.28
2.98
1.58
0.91
0.49 0.52
0.12
1.101.27
0.67
0.390.21 0.22
0.05
0.47
IS NHS Non-IS Non NHS Avg
Marg
inal P
DC
($
/ES
AL-m
ile)
Results for OW Trucks with GVW 108,000 - 150,000 lbs
Permit fee at time of the study (60 cents)
Results for OW Trucks with GVW > 150,000 lbs
Permit fee at time of the study ($1.00)
7-Axles 8-Axles 9-Axles 10-Axles 11-Axles 12 & More Axles
Avg. > 150K
0.0
1.0
2.0
3.0
0.05 0.05 0.04 0.05 0.06 0.05 0.05
0.49 0.480.40 0.43
0.520.45 0.46
1.941.90
1.571.70
2.07
1.77 1.82
0.83 0.810.67 0.72
0.880.76 0.78
IS NHS Non-IS Non NHS Avg
Marg
inal P
DC
($
/ES
AL-m
ile)
Conclusions
Pavement asset damage costs herein are derived as a function of: Pavement characteristics (e.g.,
functional class) Vehicle characteristics (GVW, axle
spacing, axle load) Pavement damage cost
estimates (average): $0.006/ESAL-mile on Interstates $0.218/ESAL-mile on non-NHS
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Conclusions
Consequences of ignoring reconstruction or maintenance expenditures (as in past studies) Non-consideration of these expenditures
can result in underestimation of pavement damage cost by 79% and 83%, respectively.
Bridge damage cost estimate Example: a 5-axle truck weighing 80-
108 kips, crossing a steel bridge 0-20 yrs of age, assuming 25% load share of damage, the damage cost is $0.007/foot/pass.
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