车头时距分布和到达分布是交通流理论中两个重要的分布。
Headway distribution and arrival distribution are two important distributions of traffic flow theory.
为准确把握冰雪条件下城市道路交通流特性，研究城市不同类别道路的车头时距分布规律。
To grasp exactly the traffic flow characteristic of urban road under ice and snowfall conditions, headway distribution of different kinds of urban road was studied.
为了更好地描述机动车到达规律，基于韦布尔分布函数建立了描述机动车车头时距分布的韦布尔修正模型。
To describe the motor-vehicle arrival pattern better, a revised Weibull model(RWM) was developed based on the Weibull distribution function to explain the headway distribution of motor-vehicle.
文中还给出了计算机程序框图，并将M_2模型模拟结果与据车头时距为负指数分布的M_1模型的模拟结果作了比较。
Then the simulation flow chart is given. A comparison between the simulation results based on M2 model and M1 model (exponential distribution model) is made.
针对我国现有道路交通条件下典型的信号控制交叉口，对不同车道宽度、转弯半径的右转车道的饱和车头时距进行现场测定。
Saturation time headways with different lane widths and turning radiuses were measured on the spot and abnormal data were identified and eliminated.
针对我国现有道路交通条件下典型的信号控制交叉口，对不同车道宽度、转弯半径的右转车道的饱和车头时距进行现场测定。
Saturation time headways with different lane widths and turning radiuses were measured on the spot and abnormal data were identified and eliminated.
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