英语翻译The type of facility is critical .the existence of unint

英语翻译
The type of facility is critical .the existence of uninterrupted flow ,the presence of medians ,and other major facility type factors significantly affect flow characteristics and capacity.The development environment has also been found to affect the performance of two-lane roadways ,multilane highways ,and signalized intersections.
Lane and shoulder widths can have a significant impact on traffic flow .Narrow lanes cause vehicles to travel closer to each other laterally than most drivers would prefer .Motorists compensate by slowing down or observing larger longitudinal spacing for a given speed ,which effectively reduces capacity ,service flow rates ,or both .
Narrow shoulders and lateral obstructions have two important impacts .Many drivers will steer away from roadside or median objects they perceive to pose a hazard .This action brings them laterally closer to vehicles in adjacent lanes and cause the same reactions as those exhibited in narrow lanes .
Restricted design speeds affect operation and level of services ; drivers are forced to travel at somewhat reduced speeds and to be more vigilant in reacting to the harsher horizontal and vertical alignments resulting from a reduced design speed .In extreme case ,the capacity of multilane facilities has been found to be affected by low design speeds .
The horizontal and vertical alignment of a highway depends greatly on the design speed used and the topography through which the roadway must be constructed .Procedures for uninterrupted flow facilities categorize the general terrain of a highway as follow :

设施的类型是至关重要的.有横流,在场的薪酬等因素,严重影响大流通设施种类特点和能力.发展环境还发现影响绩效双线公路、公路multilane,灯号路口.车道宽度,肩负有重大影响交通流量.狭窄通道造成车辆前往接近对方横向比一般司机宁愿.驾驶人放慢补偿的纵向间隔或某一大型观测速度,有效地减少了能力、服务流动比率,或两者兼罚.窄肩、横向阻力有两个重要影响.许多司机摆脱他们看到路边或物体中对健康构成威胁.这一行动使他们更接近横向线附近的车辆,造成同一所反应出的狭窄通道.设计时速和运行受到影响服务水平; 司机不得不在旅行速度有所降低,必须提高警觉,加大横向和纵向的反应路线减少了因设计速度.在极端情况下,该设备已发现multilane能力受到设计速度低.横向和纵向的高速公路路线设计行车速度在很大程度上取决于使用和地形屏障,使公路.按照程序,便利畅通无阻的高速公路一般地形如下: