【单选题】

Putting traffic signals inside cars could save fuel, a German researcher told at a conference in London last week.Dr. Ulrich Seiffert, who works for Volkswagen’s research division, was speaking at a conference on the future development of technology which had been organised by the Open University.

He said that a pilot scheme had just been installed in Wolfsburg by Volkswagen, in conjunction with Siemens and the local council. It would be tested over the next few months. The central feature of the scheme is a link between computer-controlled traffic signals and lights on the vehicle dashboard which tell drivers whether to slow down or speed up.
Each time drivers slow down they lose momentum, and so waste fuel when they accelerate again.Even when a group of traffic signals on a stretch of road are synchronised(同步) so that traffic at a set speed, normally around 45 km/h, always gets a green light, the full potential is not realiseD、
This is because drivers approaching a red light at the optimum speed slow down in anticipation of having to stop. In the Wolfsburg system, drivers would have a second set of indicator lights in the car.A、green light indicates that the traffic signal ahead will be green by the time the car reaches it, so the driver does not need to slow down.A、red light tells the driver to slow down.
The information that a car computer needs to calculate whether the traffic lights will have changed by the time the car reaches them is quite simple. The details of the traffic light operation. such as cycle time and length of time the light is green are now stored electronically near junctions. They can be fed to a suitably equipped car by a device such as a transponder. The only extra information required is the distance of the car to the lights, indicated by the transponder’s position. and the speed it is travelling with, which can be obtained from the speedometer. Seiffert said that the system would smooth traffic flow, save fuel and thereby cut pollution
This article is most probably taken from______.
A、fact findings by government panelB、an advertisement
C、a trade journalD、Volkswagen’s catalogue