With over 30 years of experience designing, operating, and maintaining traffic signals, Joe gained his traffic signal knowledge through hands-on experience working as a city traffic engineer, working for a signal contractor, through equipment sales, and as a consultant.  This well rounded experience helps him to understand the intricacies and nuances of the signal design and operation.


4th & Jessup - Brighton

4th & Jessup - Brighton

Traffic Signal Design

Joe has designed 145 traffic signals in Colorado and Wyoming, and managed the construction of 54 of these signals.  He has experience with the design of complete traffic signals, modification of existing signals, and replacement of existing signals utilizing mast arm poles, span wire poles, and modular poles in the Denver Tech Center.  Joe has designed traffic signals to meet CDOT and WYDOT standards or the standards of the local municipality. He has also worked on several design-build projects.  

His experience includes:
•    Standard and unique signal phasing
•    Working knowledge of the components in                NEMA and Type 170 cabinets
•    Experience developing timing and programming      NEMA, Type 170, and 2070 controllers
•    Vehicle detection technologies including                   inductive loops, video detection, and radar
•    Standard pedestrian push buttons and                      accessible pedestrian signal detectors
•    Experience designing communication using              fiber optics, broadband radio, twisted pair                  copper, and dial-up telephone
•    Signal wiring
•    Mast arm, span wire, and modular signal poles
•    Signing and pavement markings to coordinate          with the traffic signal
•    Utility exploration and clearance
•    Determining the electrical service location
•    LED and HID street lighting
•    Design of sidewalks and curb ramps

Communities where Joe and STS have designed signals include (click on highlighted links to see project photos):
•    Arapahoe County (3)
•    Arvada
•    Aspen
•    Aurora (3)
•    Berthoud
•    Boulder
•    Brighton (7)
•    Broomfield (6)
•    Castle Rock (2)
•    Denver (11)
•    Douglas County (12)
•    Edwards
•    Evans (5)
•    Fort Collins
•    Fort Lupton (2)
•    Fort Morgan (2)
•    Golden
•    Greeley (4)
•    Greenwood Village (10)
•    Johnstown
•    Lafayette (2)
•    Lakewood (3)
•    Lockheed Martin
•    Longmont (4)
•    Louisville (8)
•    Loveland (11)
•    Mesa County (2)
•    Montrose
•    Northglenn (3)
•    Parker
•    Sheridan
•    Steamboat Springs (5)
•    Thornton (4)
•    Westminster (7)
•    Casper (7)
•    Cheyenne (4)
•    Rock Springs (4)


Ulster Street Pedestrian Crossing - denver Tech Center

Ulster Street Pedestrian Crossing - denver Tech Center

Traffic Signal Timing and Evaluation

Mr. Henderson has developed interval timing for more than 300 signals for NEMA, 2070, and Type 170 controllers.  He has performed timing studies for corridors and grid networks utilizing Synchro, TruTraffic, and Transyt 7F.  Joe has optimized the timing in the field to verify that his timing accommodated the traffic flows.  The following are examples of corridor and network timing projects that he has performed. 
•    Yellowstone Road Corridor - Cheyenne
•    SH 44 - Grimes, IA
•    US 160 - Alamosa
•    US 34 Bypass - Greeley
•    Citywide Signal Timing - Casper

Traffic Signal System Design

Joe has designed and implemented multiple traffic signal systems in Colorado and Wyoming.  His experience includes the selection of controllers and system software, communications design, preparation of specifications for hardware and construction, and implementation of the systems. The following examples demonstrate his experience in the area of traffic signal system design.
•    Signal System Database Review - Fort Collins
•    Fiber Optic Design - Thornton
•    Traffic Signal System Selection and                                Implementation - Brighton
•    System Implementation - Park Meadows Mall
•    System Implementation - Longmont & Denver
•    Design and Implementation - Casper





Our Clients Say It Best

“Joe has demonstrated continually that he is an exceptional project manager with the leadership skills to deliver a great result on challenging, multi-faceted projects within the budget and on schedule.  I would highly recommend Joe Henderson to any agency looking for a responsive professional to provide quality transportation services and solutions.”

Joliette Woodson, PE
Civil Engineer III
City of Louisville


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