车 is short of 公共汽车，and 路 here means number.for example :"i want to take bus No.213 to 徐家汇”in chinese u can say:"我要做213路车到徐家汇"

some phrases about "车"：1. 一辆车，三辆车 a(three)cars (buses), sometimes 部instead of 辆 ---------------------- 2. 一个车队 a fleet of car(bus) -------------------3. 5路车 (bus)5 , but 这趟车is more common than 这路车when we say ‘ Does this bus go to Xiajiahui?' Actually the 趟 here is a misuse, but this use is already long and widely accepted so that most people does not even realize it. To clarify this let me give another instance: 你走这一趟要几天？How long will it take for this trip? 这车你跑一趟能赚多少钱？How much money can you earn by this run with the trunk？

yea~~ you guess right!!! 车 in here is instead of the bus(公共汽车）!!!! “路车” it's mean "NO.X bus" for instance “5路车”= “NO.5 bus" .. alright! ... do you understand now?

In Chinese,“车”means the vehicles which have wheels and are driven on the road.In this sentence,"车"means bus. In Chinese,no.1 bus=一路车.

车in chinese means bus,car,train,and so on,not the short of 公共汽车。we know it means bus or train or car which like that we know it means车but not 公共汽车 because we understand what the persons who speak to us mean in this dialogue~~~~~~~路车not a word,we say no.3 bus means 3路车 in chinese,no.3=3路，车=bus.so we say 这路车 just means 'this bus'~~~~~~~~~for example u and me here,we see the no.3 bus coming,u ask me 'does this bus go to AA？' i know u mean this no.3 bus,so u don't need to ask'does this no.3 bus go to AA' which like that we know this is 3路车，so u don't need to ask me 这辆3路车到AA吗？u can ask '这路车到AA吗？'