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Pages 5-17

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From page 5...
... 6 chapter two LITERATURE REVIEW The literature review covers the national and international literature on the practices followed for permitting SHCVs. It is separated into two major parts, the first dealing with SHCV weight regulations and the second with the fees charged for permitting SHCVs.
From page 6...
... 7 State/Province Superload GVW (kips) Tire Weight Limit (lb/in.)
From page 7...
... Texas >254.3 -- 25, 46, 60, 70 Pavement analysis when GVW > 500 or tire weight > 6 kips Utah >125 600 29.5, 50, 61.75, Bridge f. Vermont >150 600 Depends on tire size Virginia >150 -- 24, 44, 75/*
From page 8...
... 9 FIGURE 2 Process used in Texas for evaluating the impact of SHCVs on pavements (5)
From page 9...
... 10 * Distance in feet between the first and last axle of any group of consecutive axles.
From page 10...
... 11 As mentioned earlier, the U.S. Congress recently authorized a Comprehensive Truck Size and Weight Limits Study (1)
From page 11...
... 12 intermodal transport (e.g., combination of truck and rail or ship)
From page 12...
... 13 State/Province Single-Trip "Superload" Permit Fees (GVW in kips) ; 2012$ Alabama Permit fee: $100 for GVW > 150, additional fees decided on a case-by-case basis.
From page 13...
... 14 Montana Permit fee: $10–$50 depending on miles driven Additional fee for GVW > 100: $70 + $3.50/5,000 lb on excess for each 25 miles driven. Nebraska Permit fee: $20; additional fees decided on a case-by-case basis.
From page 14...
... 15 • Two (3%) , Texas and Ontario, use variations of the GVW-distance approach for establishing SHCV permit fees.
From page 15...
... 16 that use the weight-distance approach. Although a direct comparison between these unit fees is not possible given the specific conditions that apply to each, it points out that they range from $0.006/ton/mi to $0.2/ton/mi, with an average value of approximately $0.05/ton/mi.
From page 16...
... 17 • Semi-trailer with 6 axles (CS6) • Double trailer with 5 axles (DS5)
From page 17...
... 18 pavement damage mechanisms, but also the direct damage that may be caused by SHCVs on pavement bases and subgrades. As determined by the results of the survey questionnaire presented in chapter three, several agencies conduct mechanistic pavement analysis for permitting SHCVs, but very few consider direct base and subgrade damage.

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