I have 3 years of experience, and specialize in the field of traffic engineering with specific knowledge in the areas of traffic signals, work zones and roadway signing. I have published on such topics as traffic signal system timing, signalized intersection delay and roadable aircraft. I have testified 15 times on topics such as traffic signal design flaws, work zone deficiencies and pavement drop-offs. I have authored three training manuals on traffic signal design, operation, timing and construction. These manuals are used nationwide in the USA and Canada.