Under what condition can a driver legally run a red light in Texas?

Answer: B — When directed by a law enforcement officer

A driver can legally run a red light in Texas when directed by a law enforcement officer. This legal allowance is rooted in the authority of law enforcement to ensure traffic flow and safety. For instance, if an officer is directing traffic at an intersection, they may instruct a driver to proceed through a red light to maintain order or clear an obstruction. Following such directions is essential for obeying the law and ensuring safety on the roads, as officers are trained to manage traffic conditions and respond to various situations that may require deviation from normal traffic signals. This situation underscores the critical role law enforcement plays in traffic management and public safety.