Sain designed traffic signal upgrades for the US-280 corridor from Mountain Brook in Jefferson County to Hugh Daniel Drive in Shelby County. Sain performed the design of the traffic signal upgrades for over 20 intersections, which resulted in a closed-loop fiber optic traffic signal system complete with coordination timing plans developed, installed, and fined tuned by Sain.

Years later, due to our background and familiarity with the corridor, Sain performed the design of the equipment upgrades necessary for implementation of an adaptive traffic signal control system, including adjustments to fiber optic communication, vehicle detection, and implementation assistance to the contractor during construction.