Final answer:
Performing a U-turn is generally illegal in a business district to ensure traffic flow and safety.
Step-by-step explanation:
In a business district, it is generally illegal to perform a U-turn.
U-turns are restricted in business districts primarily to ensure smooth traffic flow and safety for pedestrians and vehicles. The restrictions aim to prevent sudden lane changes and reduce the risk of accidents.
Violating this restriction may result in a fine or penalty, depending on the specific laws and regulations of the jurisdiction.