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
2024-02-10
19
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:https://tihaiku.com/zcyy/3439165.html
相关试题推荐
[originaltext]Asthecarindustrydevelops,trafficaccidentshavebecomea
[originaltext]Asthecarindustrydevelops,trafficaccidentshavebecomea
[originaltext]Asthecarindustrydevelops,trafficaccidentshavebecomea
Atthat______moment,OlympicTeamscoredandwonthegameatlast.A、crucialB、
Accordingtothereport,about60%oftrafficjamsinthiscity______(是由行车不慎造成的)
Whenlightsweresuddenlyturnedon,thetiny’beamoftheflashlightwaslost__
[originaltext]Whydon’tbirdsgotlostontheirlongmigratoryflights?Sci
Itwasaterribletrafficaccident.Fivepassengerswerekilled,andelevenwere
Look,apolicecariscoming.There______(前面肯定是出交通事故了).mustbesometrafficacc
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
随机试题
Whatwillbetheimpactofaglobalcomputernetworkonculturalforms?The
Everybodyloathesit,buteverybodydoesit.Arecentpollshowedthat40%o
Inafamilywheretherolesofmenandwomenarenotsharplyseparatedand
Halftheexcusesshegivesarenottrue,butshealwaysseemsto______them.(19
FortravelerstoEurope,fromJanuary2002there’ssomethingspecialonoffe
应立即用2%~4%碳酸氢钠洗胃的是A.巴比妥中毒 B.磷化锌中毒 C.美曲膦
下列工程中的道路属于城镇道路工程的是()。A、广场 B、停车场 C、高架桥
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
图示长管并联管段1、2,两管段直径相等(d1=d2),沿程阻力系数相等,长度l1
关于团队奖励的说法,错误的是()。A.团队奖励计划可以使员工产生较强的凝聚
最新回复
(
0
)