Must all traffic signs be obeyed at all times?

Traffic signs are a crucial part of road safety, and they provide important information regarding conditions, rules, and warnings for all road users. The correct answer indicates that all traffic signs must be obeyed at all times, except when directed otherwise by a policeman or traffic officer. This exception is important because, in some situations, law enforcement may need to direct traffic for safety reasons, which could involve overriding the posted signs to manage the flow of vehicles or pedestrians.

Obeying traffic signs is essential for maintaining safety on the roads, as they are designed to ensure that drivers, cyclists, and pedestrians can anticipate and react appropriately to various roadway conditions and regulations. Signs provide information regarding speed limits, road conditions, and the rules of the road, helping to prevent accidents and promote an orderly driving environment.

The other choices suggest scenarios where traffic signs do not need to be followed, which undermines the fundamental purpose of these signs and could lead to dangerous situations on the road. It is important for all drivers and road users to understand the obligation to abide by traffic signs at all times for their safety and the safety of others.