Well, the thing is that, the congestion charges, they were introduced first as a trial, so they were introduced in January and then abolished again at the end of July, followed by a referendum, and then they were reintroduced again in 2007, which of course was a wonderful scientific opportunity.
이 혼잡 통행료가 처음에는 시범적으로 도입된 것이어서, 1월에 시작했다가 시민 투표 결과에 따라 7월 말에 다시 폐지되었습니다. 그러다가 2007년에 다시 도입되었습니다. 이것은 물론 놀라운 과학적 실험의 기회가 되었답니다.