首页
登录
职称英语
Traffic lights are crucial tools for regulating traffic flow. They are not,
Traffic lights are crucial tools for regulating traffic flow. They are not,
游客
2023-07-09
61
管理
问题
Traffic lights are crucial tools for regulating traffic flow. They are not, however, perfect. At unmanaged junctions, a pattern of stop-go movement can still be frustrating and burn more fuel than a smooth passage would. Creating such a smooth passage means adjusting a vehicle’s speed so that it always arrives at the lights when they are green. That is theoretically possible, but practically hard. Roadside signs wired to traffic lights may help, but they have not been widely deployed. Now scientists have an idea that could make the process cheaper and more effective. Instead of a hardwired network of signs, they propose to use mobile-phone apps.
For a driver to benefit, he must load a special software, dubbed SignalGuru, into his phone and then mount it on a special bracket attached to the inside of his car’s windscreen, with the camera lens pointing forwards. SignalGuru is designed to detect traffic lights and track their status as red, amber or green. It broadcasts this information to other phones in the area that are fitted with the same software, and—if there are enough of them—the phones thus each know the status of most of the lights around town. Using this information, SignalGuru is able to calculate the traffic-light schedule for the region and suggest the speed at which a driver should travel in order to avoid running into red lights.
Tests in Cambridge, Massachusetts, where five drivers were asked to follow the same route for three hours, and in Singapore, where eight drivers were asked to follow one of two routes for 30 minutes, revealed that SignalGuru was capable of predicting traffic-light activity with an accuracy of 98. 2% and 96. 3% respectively, in the two cities. This was particularly impressive because in Cambridge the lights shifted, roughly half-way through the test, from their off-peak schedule to their afternoon-traffic schedule, while in Singapore lights are adaptive, using detectors embedded(嵌入)under the road to determine how much traffic is around and thus when a signal should change. Fuel consumption fell, too—by about 20%. SignalGuru thus reduces both frustration and fuel use, and makes commuting a slightly less horrible experience. [br] What do we know about SignalGuru from the second paragraph?
选项
A、It is intended to keep track of traffic jams.
B、It can show where all traffic lights are.
C、It enables phones to share the information.
D、It works as a brake that slows down the car.
答案
C
解析
事实细节题。本段对SignalGuru这一特殊软件的相关情况进行了介绍。其中第三句话介绍了SignalGuru的一个功能特点:它能将信息传送到该区域安装有同样软件的其他手机上,这样每部手机就会了解全城大多数交通灯的状态。故C)“它能够使手机相互分享信息”为正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/2822899.html
相关试题推荐
Trafficfacilitiesshouldbeimprovedasquicklyaspossible______.(以减少交通事故的数量)
Itwasaterribletrafficaccident.Fivepassengerswerekilled,andelevenwere
Outofarandomsampleofdrivers,21%______(在前一年中出过交通事故).hadbeenintrafficac
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
随机试题
[originaltext]Yousaidtherewouldbea10percentdiscount,didn’tyou?(A)No,
CharlesDickenswasbornin1812inPortsmouth,England.Hewasthesecondo
他的朋友滕子京被贬岳州(今湖南岳阳),重修岳阳楼,写信请他为岳阳楼写篇记,尽管那时范仲淹在政治上遭到很大的打击,被贬在邓州,身体欠佳,但他还是答应了滕子
Theeconomyurgesthegovernmenttotakemeasurestocountertheinflationandl
以下所列处方书写的各项要求中,最正确的是A.每张处方不得合开中西药品 B.每张
沈阳市X机器人自动化股份有限公司(以下简称“X公司”)有全球最齐全的机器人种类。
纳税人采用新办纳税人“套餐式”服务的,可一并办理以下涉税事项()。A.增值税一
一般情况下,招标文件应该包括的内容有()。A.招标公告或投标邀请书 B.
下列各组元素原子半径由小到大排序错误的是()。 A.Li
根据《煤矿井巷工程施工规范》GB50511一2010,泥岩、胶结不好的砂岩、煤等
最新回复
(
0
)