Final answer:
Temporary condition signs, such as those warning of a 'Survey crew working on the road ahead', are aimed at alerting drivers and pedestrians to alterations in regular traffic conditions. These are crucial for promoting safety and ensuring the smooth flow of traffic.
Step-by-step explanation:
The purpose of a temporary condition sign that warns of a 'Survey crew working on the road ahead' is to alert drivers and pedestrians about temporary changes or disruptions in the normal traffic conditions. This type of sign serves to promote safety by giving advance notice to drivers so they can adjust their speed or take a different route if necessary. For instance, a survey crew might require a lane to be closed or traffic to be slowed down, and alerting drivers about this ahead of time helps to prevent accidents and ensures the smooth flow of traffic.
Learn more about Temporary Condition Sign