Between 2007 and 2012 the number of incidents of graffiti recorded by the British TransportPolice fell by 63%.
在2007到2012年，违反英国交通法规的涂鸦事件的数量下降了63%。
2
Police say possible victims also include relatives of those killed in the London transport bombings on July seventh, two thousand five.
警方表示，可能的受害者还包括2005年7月7日伦敦交通爆炸中遇难者的亲属。
3
Such information can be collected via traffic helicopters, roadside cameras, police patrols, sensors embedded in roads, tracking units in vehicles, data from public transport turnstiles and surveys.