The operating costs were determined by survey on a statewide basis. The operating cost for "four or more axle units, straight body trucks" was determined by survey to be $46.81 an hour. The operating cost for "three axle units" was determined by survey to be $37.35 an hour. The operating cost for "tractor only" was determined by survey to be $57.44 an hour. The operating cost for "trailer only" was determined by survey to be $11.46 an hour. The operating cost for "tractor trailers" was determined by survey to be $68.90 an hour.
Adding the prevailing wage for drivers of these four types of trucks from each of the state's 10 highway and heavy construction areas to the operating costs, the minimum hourly truck rental rate for the four types of trucks in each area is certified to be as follows.
Minimum hourly truck rental rates
| Region 7 | Tractor trailer | 4 or more axle | 3 axle | Tractor only |
| March 10, 2008 | $82.75 | $75.93 | $64.40 | $71.29 |
| May 1, 2008 | $83.90 | $77.08 | $65.55 | $72.44 |
| June 8, 2009 | $94.75 | $77.02 | $67.41 | $83.29 |
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Prevailing wage truck rental rates