Major Traffic Generators

Any new, expanded, changed, or repurposed (land use change) development with 100,000 square feet or more of gross floor area or 200 or more parking spaces, requires OSTA approval to ensure safe operation on State roads. Residential developments of 100 units or less are exempt. The review & approval of MTGs is accomplished by either an Administrative Decision (AD) or Certification Process (Certificate).

List of Certificates and Administrative Decisions
Interactive Map
Trip Generation Guidelines - October 2023

 

If you are a developer/consultant and are unsure if a development requires OSTA regulation:
 flowchart to determine whether OSTA regulation is required. 
If the development requires OSTA Regulation:

flowchart to determine what type of OSTA regulation is required.

If the development is part of an existing Major Traffic Generator:
flowcharts to determine whether a development requires OSTA review if the development is part of an existing Major Traffic Generator 

Regulation by Administrative Decision (AD). Regulation by Certification Process (Certificate).

 

Department of Transportation

Mailing address
2800 Berlin Turnpike
P.O. Box 317546
Newington CT 06131-7546