The noise signal of passing car is gathered through microphone array, and processed off line with array signal processing theory , thus traffic volume and up and down vehicles can be estimated accurately.
提出了将车辆个数估计转化为阵列信号处理中的信号源个数估计，进而得到道路交通量；将上下行车辆的数目的估计转化为阵列信号处理中的波达方向(DOA)变化估计，进而得到车辆上下行数目估计。
Detection method of up and down vehicles with acoustic signal based on wideband array signal processing
基于宽带阵列信号处理的车辆上下行流量声频检测方法
The old car jogged up and down.
那辆旧汽车上下颠簸着行驶。
The bus jogged along.
那辆公共汽车上下颠簸地行驶。
He patched up an old bicycle to ride to work and save carfare.
他修补了一辆旧自行车，骑车上工，省下了交通费。
This procedure can be done with the engine in or out of the vehicle.
该程序可在引擎在车辆上或离开车辆情况下进行。
The old bus jogged up and down.
那辆旧公共汽车一上一下地颠簸着行驶。
Remove spring from vehicle.
从车辆上拆下弹簧。
There was a lot of traffic on the roads yesterday.
昨天路上行人车辆很多。
To get off or down, as from a horse or vehicle.
下马，下车离开或向下，如从马或车辆上
is closed to cars and roads may be used by bicycles only.
是车辆禁行日，道路上只许自行车通行，
A runaway car rolled down a hill and crashed into ten cars.
一辆失控的车从山上滚下来, 撞了十辆车。
"a vehicle, such as a streetcar, that runs on rails."
一种在铁轨上行驶的车辆,如有轨电车。
Along the routes of certain tracks not a car was running.
有些电车轨道上，沿线没有车辆在行驶。
"The springs will further compress or expand as the car wheels encounter irregularities in the road. Thus, the wheels can move up and down somewhat independently of the frame."
当车辆行使在路面上时,弹性元件会进一步地伸缩,这使车轮能时时独立于车架做上下运动。
I can see a taxi, a bus, a van, a bicycle in the streets.
我能看见街道上有一辆出租车，一辆公共汽车，一辆有篷货车和一辆自行车。
There is a bicycle under the small tree.
有一辆自行车放在小树下
The cop signaled traffic to halt to allow pedestrians to cross the street.
警察指示车辆停下以便让行人过街。
Analysis of Travel Time Prediction Based on BRT Environment
BRT环境下车辆行程时间预测分析