The objective of this study was to develop the data necessary to produce the turning templates that would represent the minimum turning paths for critical design vehicles. This would include information concerning truck turning radii and offtracking for larger trucks with varying wheelbases operating in Kentucky. In order for the turning templates used for the various design vehicles to be based on the same procedure, data were produced tor design vehicles ranging from a passenger car to a combination truck with a 53 foot trailer. The simulation model used was the Truck Offtracking Model (TOM) and was developed by the California Department of Transportation.

The data obtained from the truck offtracking simulation program show that it can be used to develop turning templates that agree with those developed by AASHTO. The plotting information generated from this study can be used to prepare turning templates that can be used in the design process.

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The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. The inclusion of manufacturer names and trade names are for identification purposes and are not to be considered endorsements.