索尼专业高清摄像机:哪位大哥帮我翻译下 谢谢了

One method of demand management that has received considerable interest and study is congestion charging .this is where vehicles are surcharged for their use of road space depending on the prevailing levels of congestion . new technology in the form of smart cards and vehicle identification are needed to ensure that the system is practical and fair . measures to accommodate foreign or non local vehicles are also needed .video image analysis has reached a level of sophistication that can be used for this purpose
Engineering measures
The traffic engineer has a vast array of measures which can be applied to achieve his objective .These objectives include : capacity enhancements ; accident reduction ; environmental protection and enhancement ; servicing of premises and providing access ; providing assistance to pedestrians and cyclists ; assisting bus or tram operators ; providing facilities for persons with disabilities ; regulating on – street and off – street parking .
The majority of capacity problems occur at road junctions . In urban areas road junctions are important focal points for pedestrian and cycling activity and are often the site of public transport interchanges . Due to the various conflicting demands it is not surprising that two – thirds of urban traffic accidents occur at road junctions . Selection of an appropriate junction design for a particular site can be very difficult . Some designs , such as roundabouts , can significantly reduce the severity of vehicle – vehicle accidents but can prove hazardous for cyclists . In some instances installation of traffic signals with full pedestrian and cycle facilities and bus priority measures might also reduce the overall traffic – handling capacity .
Careful allocation of road space to separate traffic streams into designated traffic lanes can reduce confusion and limit accidents . Designation of traffic lanes might include special vehicle lanes , such as cycle and bus lanes and dedicated left – or right – turn lanes .