When is it permissible to make a U-turn?

Making a U-turn is permissible when it is safe to do so and not prohibited by any signage. This means that before attempting a U-turn, a driver must ensure that the maneuver can be performed without risking the safety of themselves or other road users, as well as confirming that there are no signs explicitly forbidding such a turn in that location.

Factors that contribute to the safety of a U-turn include visibility of oncoming traffic, the width of the road, and the presence of pedestrians. It's critical for drivers to ensure that the turn does not interfere with the flow of traffic or create hazards.

The other options reflect more restrictive or general interpretations of the rules surrounding U-turns. For example, being in a hurry is not a valid reason to perform a U-turn, and making U-turns only at traffic signals limits the maneuver to those specific locations where such signals exist, which may not be practical or legal in many other areas. Lastly, stating that a U-turn is permissible under any circumstances disregards safety and legality, which are paramount considerations when driving.