<sod>The tunnel is patrolled by Highways Agency Traffic Officers. Officers may stop and direct traffic on the crossing and its approach roads, and must be in uniform to exercise their powers.<ref name="S28">{{cite web|url=http://www.legislation.gov.uk/ukpga/1988/20/section/28|title=Dartford-Thurrock Crossing Act 1988 (section 28) |publisher=Ministry of Transport|work=National Archives|accessdate=7 July 2014}}</ref> The crossing's speed limit is enforced by [[safety camera]]s; between October 2012 and June 2014, 24,229 drivers were caught speeding, with some travelling as fast as {{convert|94|mph|km/h}} A spokesman from the Highways Agency said the cameras were "helping us improve safety and make journeys more reliable".<ref>{{cite news|url=http://www.bbc.co.uk/news/uk-england-27746483|title=Thousands caught speeding on Dartford Crossing|work=BBC News|date=7 June 2014|accessdate=4 July 2014}}</ref> The bridge also has a reduced speed limit of {{convert|30|mph|km/h}} when [[crosswind]] is faster than {{convert|50|mph|km/h}} or headwind faster than {{convert|60|mph|km/h}}, and is closed entirely if Britain's national weather service, the [[Met Office]], predicts crosswind above {{convert|60|mph}} or headwind above {{convert|70|mph}}.<ref name=limits/><eod>
<sod>The tunnel is patrolled by Highways Agency Traffic Officers. Officers may stop and direct traffic on the crossing and its approach roads, and must be in uniform to exercise their powers.<ref name="S28">{{cite web|url=http://www.legislation.gov.uk/ukpga/1988/20/section/28|title=Dartford-Thurrock Crossing Act 1988 (section 28) |publisher=Ministry of Transport|work=National Archives|accessdate=7 July 2014}}</ref> The crossing's speed limit is enforced by [[speed camera]]s; between October 2012 and June 2014, 24,229 drivers were caught speeding, with some travelling as fast as {{convert|94|mph|km/h}} A spokesman from the Highways Agency said the cameras were "helping us improve safety and make journeys more reliable".<ref>{{cite news|url=http://www.bbc.co.uk/news/uk-england-27746483|title=Thousands caught speeding on Dartford Crossing|work=BBC News|date=7 June 2014|accessdate=4 July 2014}}</ref> The bridge also has a reduced speed limit of {{convert|30|mph|km/h}} when [[crosswind]] is faster than {{convert|50|mph|km/h}} or headwind faster than {{convert|60|mph|km/h}}, and is closed entirely if Britain's national weather service, the [[Met Office]], predicts crosswind above {{convert|60|mph}} or headwind above {{convert|70|mph}}.<ref name=limits/><eod>