2024年4月3日发(作者：中国移动充话费)

Unit3

Introduction

Transport telematics, also known as intelligent transport systems (ITS), are

concerned with the application of electronic information and control to improve

transport. Some new systems have already been implemented and the pace of

implementation can be expected to quicken. With a crystal ball, we can foresee

how a typical journey to work may look in 10 years time.

Before leaving home, you check your travel arrangements over tile internet.

Often you choose to travel by public transport and you can identify travel times

and any interruptions affecting the service. On this occasion, you choose to travel

by car as you have an appointment later in the day at one of those oldfashioned

business parks that are inaccessible by public transport. There are no incidents

recorded on your normal route to work so you do not bother to use your

computer route model to select an optimum route for you.

Once in your car, you head for the motorway and select the cruise control,

lane support and collision avoidance system, allowing you to concentrate on your

favorite radio service. Suddenly, this is intelrupted by the radio traffic-message

channel service giving you information about an incident on your route. You are

not surprised when, at the next junction, the roadside variable message sign (VMS)

corffirms this; motorway messages really are believable now!

You feel pleased with yourself that you have preceded your in-car

navigation system with the coordinates of your final destination, and soon you are

obtaining instructions on your best route with information updated from the local

travel control center.

As you near your place of work, you are aware of roadside messages

informing you of the next park and ride service. You choose to ignore these as you

will need to make a quick getaway for your appointment. You then check that your

travel card is clearly displayed inside the car; you don't want to be fined for not

having a positive credit for the city's road pricing and parking service! The same

card gives you clearance to your parking space; you activate your parking vision

and collision control just to be sure of not scratching the MD' s car next to you.

Using transport telematics

All these information and control services, and many more besides, are

discussed in the UK Government' s eonsuhation document. One way of

categorising these services is into the following application areas:

（1）traffic management and control

（2）tolling and road pricing

（3）road safety and law eifforeement