City Street Worker was Struck and Killed by a Speeding Car

A 52-year-old city employee, working on the SW corner of a city sidewalk, was struck and killed by a speeding car at a typical 4-way intersection, which had stop signs. The speed limit on both streets was 25 mph (40 km/h). Two folding barricades were set up in the street at that corner, but the intersection was fully operational. A teenage boy driving a car at high speed was chasing a girl who was driving another car, both traveling west. She had just stopped at the intersection and was making a left turn. He came racing up behind her, could not stop, then struck her vehicle and shot through the intersection, running over the city worker at the southwest corner. The speeding car also toppled a utility pole, smashed a city truck, and crashed into vehicles at an auto dealership. Two other men working at the site jumped out of the way, but the victim was kneeling down by the sidewalk at the time, and was run over and killed instantly. The teenage boy was arrested and charged with vehicular homicide.
Recommendations are as follows:
Manual on Uniform Traffic Control Devices (MUTCD) guidelines should be considered and utilized to protect workers performing street repair work.