David E. Wooster and Associates, Inc.
- Providing engineering services including traffic and parking impact analyses, systems and corridor analyses, traffic control, roadway, intersection and parking design, and mitigation strategies.
- http://www.dewooster.com/

C & A Traffic Solutions
- Traffic engineering consultancy specialising in road safety audits. United Kingdom.
- http://www.trafficsolutions.org.uk/

The Transpo Group
- Offer transportation planning and traffic engineering to both public and private sector clients. Includes services documentation in pdf format.
- http://www.thetranspogroup.com/

SRF and Associates
- Provides professional traffic engineering and transportation planning consulting services to communities and private clients throughout New York State.
- http://srfa.net

Livable Streets, Inc.
- Transportation engineering and planning firm specializing in the design of streets that balance the needs of all users while enhancing the livability of communities and neighborhoods.
- http://www.livablestreetsinc.com

Grove Miller Engineering, Inc.
- Consulting traffic engineering firm that provides professional services to governmental and private clients throughout Central Pennsylvania.
- http://www.grovemiller.com/

Mirai Associates
- Transportation planning and consulting firm. Services include traffic engineering, travel forecast modeling, transit planning, and traffic design.
- http://www.miraiassociates.com/

J.M. Morales and Associates, P.C.
- Consulting firm specializing in transportation and traffic engineering, highway safety, work zone design, and continuing education and training.
- http://www.jmmassoc.com/

Ontario Traffic Conference (OTC)
- Association of officials in Ontario, Canada, bringing together different fields of expertise relevant to traffic engineering. Administrative information, resources, articles.
- http://www.otc.org

National Capital Engineers Limited
- Engineering and transportation consulting services including transportation planning, traffic and parking, transit planning and road safety. Includes project websites.
- http://www.nceltd.com/

Traffic Planning and Design, Inc.
- Provides transportation engineering and related environmental services to state, municipal, and private clients.
- http://www.trafficpd.com/

The Traffic Group, Inc.
- Impact and capacity studies, planning and analysis. Overview on the company, its staff, careers, offices, services, clients, projects and news.
- http://www.trafficgroup.com/

Regina Webster and Associates Inc
- Services include traffic engineering, intersection design studies, transportation planning, traffic data collection, and traffic studies. Includes project portfolio.
- http://www.thetrafficengineer.com/

Anil Verma Associates Inc
- Design and manage the construction of transportation and civil projects. Areas of expertise include rapid transit system projects.
- http://www.anilverma.com/