Final answer:
Flashing red and yellow lights control intersections with low traffic flow. Red lights require a stop, while yellow suggests caution. Installing traffic signals regulates speed, enhances pedestrian safety, and reduces accidents.
Step-by-step explanation:
Flashing red and yellow lights control some intersections during times when there is low traffic flow. They serve different functions: a flashing red implies a stop sign and requires drivers to come to a complete stop, whereas a flashing yellow light cautions drivers to proceed with care.
Installing traffic signals serves multiple purposes. Firstly, traffic signals enforce speed regulation as many vehicles speed through intersections, often ignoring the posted limits. With the presence of signals, drivers must slow down, which helps to control the speed of vehicles and enhance road safety.
Secondly, the safety of pedestrians, such as students walking to and from campus, is significantly improved. A designated signal allows for safer crossing opportunities, reducing the need to dodge traffic. Lastly, traffic signals are imperative where the number of accidents is unacceptable. Given recent reports, the installation of signals is justified to prevent frequent accidents, some of which have tragically resulted in loss of life.
Overall, the decision to install traffic signals at certain intersections is vital for the safety of both motorists and pedestrians and to ensure the smooth handling of traffic flow, particularly in areas around schools, rapidly growing commercial zones, or when routing changes for large events.