What is U-turn ?
U-turn is noun 1. the act of turn- ing round to go back in the opposite direction The police car did or made a U-turn and went back to the hotel. U-turns are not al- lowed on motorways. 2. a complete change in policy. Synonym about-turn to do a U-turn to change policy completely The papers were surprised at the government’s U-turn on defence expenditure. The gov- ernment has done a complete U-turn on pen- sioners’ rights. The council did a U-turn and passed the development plan for the town centre.
source: Easier English, Student Dictionary Upper Intermediate Level