you can make U-turns at intersections or in between intersections, as long as you signal and make them safely.
"You can't interfere with any traffic that may be approaching – if you do you may be charged with other offences, although not necessarily the U-turn offence," said Const. Clint Stibbe, with Toronto Police Traffic Services.
这里的任何过来的车辆包括红灯下合法右转的车。你被警察骗了。上庭吧。