Traffic Impact Analysis Process

Traffic Impact Analysis (TIA) studies are intended to determine the need for any improvements to the adjacent and nearby transportation system in order to maintain a satisfactory level of service, an acceptable level of safety and the appropriate access provisions for a proposed development. The review process ensures the following: an open discussion between the city and developer regarding traffic aspects of site development; fair assessment of impacts and need for improvements; and an awareness of other developments under construction, pending, or anticipated. TIA Worksheets and Reports should be prepared under the supervision of a qualified and experienced transportation professional who has specific training in traffic engineering and several years of experience related to preparing transportation studies. TIA Reports shall be signed and sealed by a registered professional engineer.

All TIA forms have been updated to require the use of the 11th Edition of the Institute of Transportation Engineers Trip Generation Manual.

  1. Engineering Division


    Physical Address
    550 Landa Street
    New Braunfels, TX 78130

    Phone: (830) 221-4020

Step 1:
Complete the TIA Determination Form
Step 2:
Submit the completed TIA Determination Form and Proposed Site Exhibit via the Permitting Portal.
If the determination is for a phase or unit of development with a previously approved TIA Report, submit the previously approved TIA Report at this time.
Proposed Development Site Exhibit is comprised of:
-Location map with subdivision (site) boundaries, adjacent streets, north arrow
-Existing and proposed subdivision (site) access
Step 3:
Staff reviews and determines TIA requirements, and returns determination to applicant.
Step 4:
If a TIA Worksheet is required, the TIA process is finalized. The TIA Worksheet will be completed by the applicant and shall be included in the LOC and/or Permit submittal.
If a TIA Report is required the applicant shall schedule a TIA scoping meeting with staff via engineeringtechs@nbtexas.org or 830-221-4016.
Step 5:
Staff and the applicant meet to scope TIA Report requirements, and complete the TIA Scoping Meeting Worksheet.
Step 6:
The TIA Report will be completed by the applicant and shall be included in the LOC and/or Permit submittal.

Traffic Impact Analysis Related Documents