Comprehensive Truck Size and Weight Limits Study - Compliance Comparative Analysis Technical Report

Appendix E: Data Gathering Instrument for Incremental Time to Enforce Truck Weights

This appendix provides the data gathering instrument and associated instructions used to determine the potential incremental time to enforce truck weights for the alternative truck configurations using various types of scales.

Instructions:

The USDOT study team is gathering data concerning the potential incremental time (and cost) required to enforce truck weights for the six alternative configurations being considered as part of the 2014 CTSW Study. In the table that follows, please estimate the amount of time required to weigh the base case configuration (Base Case A) for each of the scale types listed. In the next three rows, please indicate by clicking on the box whether or not ("yes" or "no") you would expect there to be an impact on the time to enforce truck weight on the alternative configuration shown compared to the base case configuration. If you answer "yes," please estimate a magnitude of this incremental impact (e.g., minutes/axle or minutes/truck).

The table also requests the same type of information, except for a different base case configuration (Base Case B) and three different 2014 CTSW Study alternative truck configurations. Please provide any explanatory comments and note any additional types of costs (e.g., cost to re-program WIM screening algorithms) in the space below the table.

Data Collection form to Estimate Weighing Time for Multiple-Trailer Trucks by Scale Type
Alternate Configuration comparisons	Portable scale	Semi-portable scale	Static weigh scale (weighs axle groups)	Static weigh bridge (weighs full vehicle)	WIM (including WIM at a virtual weigh scale)
Base Case A: 3-52 @ 80k lb (53')	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?
Base Case A vs. 3-52 @ 88k lb (53')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Base Case A vs. 3-53 @ 91k lb (53')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Base Case A vs. 3-53 @ 97k lb (53')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Base Case B: 2-51-2 @ 80k lb (2 x 28.5')	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?	Estimated weighing time?
Base Case B vs. 2-51-2 @ 80k lb (2 x 33')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Base Case B vs. 2-51-2-2 @ 105k lb (3 x 28.5')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Base Case B vs. 3-52-2-2 @ 129k lb(2 x 28.5')	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?	Impact Y ☐ N ☐ Magnitude?
Additional comments: