Final answer:
Road signs and traffic signals guide driver and pedestrian actions for safety. While the specific sign mentioned in the question isn't described, generally, combination signage with both straight and U-turn arrows allows for those maneuvers.
Step-by-step explanation:
Road signs and traffic signals are vital for maintaining safety and order on the streets. Without knowing the particular sign mentioned in the question, a general answer cannot be provided. However, understanding the general rules may help.
If a road sign indicates a straight arrow and a U-turn arrow, it typically means that proceeding straight or making a U-turn is allowed from that lane. Conversely, if the sign shows a straight arrow with a U-turn crossed out, it would indicate that making a U-turn is prohibited.
Pedestrian safety is also a critical aspect of traffic control. Traffic signals at busy intersections where many students and others need to cross can be a solution to enhance pedestrian safety by allowing them to cross at controlled times.
Road safety challenges such as vehicles speeding through an intersection can be addressed by introducing a traffic signal. The presence of a signal forces vehicles to slow down and adhere to the posted speed limit, improving overall safety for all road users.