Nu-Metrics, Inc
QTT Inc. manufactures Highway Advisory Radio (HAR) systems, portable and permanent traffic counting systems, distance measuring instruments, Road / Runway Weather Information Systems (RWIS), fixed and mobile pavement sensors, and user-friendly software for the transportation industry.
http://www.nu-metrics.com/

California Traffic Safety Institute
Official California Traffic Schools and Home Study Class Listings.
http://www.ctsi-courtnetwork.org

Chicago O'Hare TRACON: air traffic control
The #1 source for air traffic control News and related Links on the planet. Listen and watch live air traffic. Participate in a discussion about air traffic control or aviation safety issues in our Public BBS. You can even find out how to become an air traffic controller.
http://www.thetracon.com

Signalbau Huber
Innovative Lösungen in Verkehrssteuerung und Verkehrsmanagement von Signalbau Huber, Weiss-Electronic, M-UniComp Innovative solutions in traffic control and traffic management by Signalbau Huber, Weiss-Electronic, M-UniComp
http://www.signalbau-huber.com/

Air Traffic Management
Air Traffic Management is an international magazine dedicated to the management of air traffic and written for senior air traffic authority personnel, airlines and industry bodies.
http://www.airtrafficmanagement.net/

Pathmark Traffic Products
Worldwide distributors of traffic safety products.
http://www.pathmark.net

Web Traffic Brokers
Sells website traffic from search engines, pop-unders, exit traffic banners, doorway pages, and 404 page errors.
http://www.webtrafficbrokers.com

Golden River Traffic
Market leading vehicle count and classification technology and traffic data collection from Golden River including shadow tolling, weigh in motion and journey time monitoring systems.
http://www.goldenriver.com

Control Specialists Company
Sales and installation of traffic signals, traffic counters, video detection, traffic controllers, and pedestrian crossing equipment.
http://www.controlspecialists.com/

Multi Router Traffic Grapher (MRTG)
Tool to monitor the traffic load on network-links using UDP and SNMP. Provides information on licensing, development, usage, and credits. (Perl)
http://oss.oetiker.ch/mrtg/