ADA is proudly the largest traffic control company in New England and provides professionally trained and certified traffic control flaggers for General Contractors for Vermont, New Hampshire, Maine and New York.



ADA Sales and Rental offers traffic control devices and equipment for sale or rent. ADA Sales and Rental is a licensed distributer of many types of construction safety devices.



ADA Security offers fully licensed, uniformed security officers with extensive training for Vermont and New Hampshire. We handle many local large scale and civic events that require unarmed security services.



ADA Bureau of Investigations offers professional investigation services to all counties of Vermont, New Hampshire, and South Carolina. We employ several licensed private investigators, many of whom are retired or active police officers.


ADA is doings it’s part to fight Coronavirus 

ADA Traffic Control is taking this virus very seriously. As we continue to adjust to the many challenges being posed by the coronavirus outbreak, we wanted to take a moment to acknowledge the incredible outpouring of support from our community.

There is comfort in seeing our community come together in such positive ways. Collaborative efforts, by offering support, local government and AGC providing clear guidance to keep us safe, and the monumental efforts from those working in human services exemplify the very things needed for our community to overcome this challenge in a way that not only preserves our values, but also strengthens them. 

As of today, ADA has adjusted our daily operations to ensure business continuity. We have identified processes to keep our work moving forward including social distancing, keeping everyone home unless called to work on the road, and closing our offices and having staff work from home. 

Many of us are working remotely, so if you need to reach out to a member of the ADA team, please use this one point of contact email or call 802-891-6439 and we will make sure we get the message to the right person. 

Our flaggers are still on the road supporting the critical infrastructure businesses such as electric and other utility companies. Please continue to drive safe through our work zones. 





ADA is now hiring for the 2021 construction season. ADA is looking for work zone professionals in all parts of Vermont, New Hampshire, Eastern New York, and Western Maine. Please call today or apply here now 

Call Today! 802-891-6439


ADA now offers 24hr highway response for emergencies including accidents, spills, etc. We will set up your entire work zone on a highway or freeway, all you have to do is show up and do your work. ADA can also handle any and all traffic safety needs throughout New England from flagging to Message Boards to Traffic Plans and much much more!!


Call Today! 802-891-6439


Proudly Serving Vermont, New Hampshire, Maine, and New York

ADA further provides the following rental items:

    • Sign Packages
    • Marked vehicles with Amber Lights (Pilot Cars)
    • Pickups (Rack Trucks) equipped with Amber Lights, Safety Harnesses, and Receivers
    • Arrow Boards
    • Message Boards

Give us a call for all of your sales and rental needs 802-891-6439

About Us

ADA Traffic Control Ltd, founded in 1996 by James G. Murphy, is a traffic control agency subcontracting professionally trained and certified traffic control flaggers. Our Corporate office is located in Colchester, Vermont.

ADA is proudly the largest traffic control company in New England and provides Traffic Control Flaggers for General Contractors for Vermont, New Hampshire, Maine and New York.

Give us a call! 802-891-6439

  • Traffic Control

    The Largest Traffic Control Company in New England

  • Sales and Rentals

    Traffic Control Devices for Sale and Rent

  • Security

    Uniformed Security Officers with Extensive Training

  • Investigations

    We Specialize in Surveillance


“My experience with ADA has been excellent. Whether in an emergency situation or for planned work, they come through every time. They have a large traffic shop and seem to have access to cones and signs required. Their invoicing is clear with detailed project information.”

ChrisGreen Mountain Power

“We have been very pleased with ADA Traffic Control. The flaggers are outfitted with all the proper signs and gear to make our work area safe. The flaggers are on time every morning and are very reliable.”

ShaneFairPoint New England

“ADA has your back. Our crews have said on several occasions that it is nice to know that when ADA is on the job you can trust that traffic is being handled and they know they are safe in the work zone. Thanks for great service.”

GregNew Hampshire Electric Coop
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