Frequently Asked Questions

1.  What is the TEPPL? 

TEPPL is the Traffic Engineering Policies, Practices, and Legal Authority. It was developed to provide NCDOT staff a place to find documented and/or official information on topics related to traffic engineering, and to hopefully encourage consistent responses to and implementation of transportation questions and issues. The TEPPL has developed into a widely used web site resource with various links to find information on many highway and transportation issues. The TEPPL's primary purpose is to make our NCDOT practices and policies, and associated documents, easily accessible to interested parties in a format that can be readily maintained and updated by traffic engineering staff.

2.  How were topics and resources selected?

All available topic and resource data was collected from statewide and Raleigh Sources. Information continues to be compiled. Both the number of topics and the number of resources continue to expand as additional topics are identified.

3.  Are there approved policies for all of the topics?

No, approved policies or practices have not been finalized for all topics. Many topics are being reviewed and are in the process of having policies developed.

4.  Whom do I contact if I have additional (or more current) data related to a TEPPL topic?

Additional or more current data related to a topic should be sent to the State Traffic Engineer or Branch Staff Engineer.

5.  A topic in the TEPPL lists several resources related to my question. The resources do not seem consistent. Which resources do I use as the authority in making my decision?

Engineering judgement should be used when deciding how to handle a specific problem unless a specific practice or policy specifies an action or solution.

The intent of these TEPPL Resource Books is to have the latest information for your use. The Engineer

should verify any information before use. If you have more up to date information please contact

TEPPL  so this information can be distributed.