Traffic Signal Operations & Coordination Timing Plans



LSL Engineering Consultants Inc. has the expertise and hands-on experience in traffic signal operations, signal timing design, coordination timing plans, Advanced Traffic Management Systems (ATMS) and operations. Coupled with our firm’s capabilities in traffic signal design and traffic modeling work, we also provide traffic signal operation evaluations and timing design services including preparing timing plans for new signalization projects, retiming existing traffic signals, developing optimized timing plans as well as designing coordination timing plans for signalized corridors.

Our engineers utilize the start-of-the-art software programs to evaluate, simulate, optimize, coordinate and synchronize traffic signal systems. The software programs allow us to create timing model based on existing traffic volumes, roadway and intersection geometrics, intersection spacings, and traffic characteristics of link speeds, travel times and start-up lost times at signalized intersections. After the model calibration, optimized or coordinated timing plans are consequently developed consisting of important timing parameters of offsets, force-offs, phase splits, phase sequence, left-turn phase treatments such as protected vs. permissive, and pedestrian timings. The timing plans are to be eventually implemented into the signal control systems with either 170/170E/2070 or NEMA controller units.

Our founding principal has brought in to the firm extensive signal timing design experience who has completed various signal timing coordination and optimization projects through his career both in Canada and the US involving over hundreds signalized intersections.


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