Final answer:
Drivers must heed the stop sign and then yield to pedestrians in the crosswalk, prioritizing safety. Factors like accidents, traffic speed, and area business can necessitate a traffic signal for better safety and flow.
Step-by-step explanation:
At an intersection where both a stop sign and a crosswalk are present, the first priority is always to ensure pedestrian safety. Drivers must obey the stop sign first, coming to a complete halt. Once stopped, they should yield to any pedestrians in the crosswalk. Factors influencing this decision include the potential for accidents, the surrounding traffic speed, and the increase in traffic near busy areas such as campuses or new businesses. Installing a traffic signal in such locations can significantly improve safety by regulating vehicle speeds and providing a dedicated time for pedestrians to cross, thereby reducing the need to dodge traffic and lessening the likelihood of accidents.