Alison has experience with signal systems, signal timing, operations analysis, signal design, and transportation research. She has worked on projects developing and implementing optimized signal timing plans and parameters, and has experience with training engineers and field technicians on the use of signal timing software. In addition to her work with signal timing, she is also experienced in traffic signal design, having designed new signals, retrofitted existing signals, and worked with the design of adaptive systems. She approaches signal system projects collaboratively with both a signal design and signal timing perspective, always considering the operating environment and needs of the system. Most recently, Alison has been working as an author on the new edition of the Signal Timing Manual.