What is one sign that indicates a weight station ahead?

Answer: B — A diamond-shaped yellow sign with a truck symbol

The indication of a weight station ahead is denoted by a diamond-shaped yellow sign featuring a truck symbol. This specific sign is designed to alert drivers, particularly those operating commercial vehicles, to upcoming regulatory checkpoints where weight and compliance checks may occur. The diamond shape and yellow color serve as cautionary signals, ensuring that truck drivers are aware of the need to possibly slow down and prepare for inspection. This type of sign is standardized within road signage regulations to ensure that it is easily recognizable and can communicate necessary information quickly and effectively to drivers on the road, helping maintain safety and compliance with weight restrictions.