首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
职业资格
Traffic lights are crucial tools for regulating traffic flow. They are not, however, perfect. Drivers exchange the gridlock that
Traffic lights are crucial tools for regulating traffic flow. They are not, however, perfect. Drivers exchange the gridlock that
admin
2018-03-02
40
问题
Traffic lights are crucial tools for regulating traffic flow. They are not, however, perfect. Drivers exchange the gridlock that would happen at unmanaged junctions for a pattern of stop-go movement that can still be frustrating, and which burns 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 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.
What did tests in Cambridge and Singapore reveal?
选项
A、SignalGuru can detect the status of traffic lights with accuracy.
B、Traffic lights in Cambridge work better than those in Singapore.
C、Drivers in Singapore follow traffic rules better than those in Cambridge.
D、Traffic lights in Cambridge are more adaptive in off-peak hour.
答案
A
解析
细节题。文中第三段第一句指出“Tests in Cambridge,Massachusetts…revealed that SignalGuru was capable of predicting traffic-light activity with an accuracy of 98.2%and 96.3%respectively.”,即SignalGuru能够准确探测交通灯的状况。故选A。
转载请注明原文地址:https://jikaoti.com/ti/3KD9FFFM
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
ThefirsttimeIquestionedtheconventionalwisdomonthenatureofahealthydiet,Iwasinmysaladdays,almost40yearsago
WhichofthefollowingsetsofphoneticfeaturescharacterizestheEnglishphoneme?
Theactivityof______maymaximizethepossibilityofelicitingideas,wordsorconceptsfromstudentswhenitisfocusedonagi
Ifateacherasksstudentstolistasmanywaysastheycantotellsomeonetoopenthedoorandlistthepossiblefunctionsof
Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswhere
Whichstageofthespeakinglessonistheleastcontrolledbyteachers?
Aspeciallanguagevarietythatmixesorblendslanguagesandusedbypeoplespeakdifferentlanguageforrestrictedpurposeis_
Donna’sfourthgradeclassroomlookedtypicallytraditional.YetsomethingseemeddifferentthatdaywhenIentereditforthef
Theword"chronology"contains______morphemes.
Studentsareofferedwithopportunitiestointegratewhattheylearnedfromthetextintotheirexistingknowledgeandcommunica
随机试题
手外伤用止血带止血,应缚于
一侧肾结核合并对侧肾积水的发生机制是
下列叙述中正确的是()。
病人钱某,双脚脚趾及脚背不慎被热油烫伤,可考虑为其选用的保护具是
《公路水泥混凝土路面施工技术规范》中规定,混凝土路面施工如遇下述()情形之一者,必须停工。
甲股份有限公司(以下简称“甲公司”)为一家上市公司,其有关生产线建造及相关租赁业务具体资料如下:(1)为建造一生产线该公司于2009年12月1日从银行借入专门借款1000万元,借款期限为2年,年利率为5%,利息每年支付,假定利息资本化金额按年计算,每年按
人的发展的互补性要求教育应该做到()。
李克强总理去赤峰考察,主持会议时强调城市的发展要注重基础设施建设,城市的“面子”是城市的风貌.城市的“里子”是城市的良心,只有筑牢里子.才能撑起面子。城市的光辉需要坚实的基础设施.城市建设是百年大计,你怎么看?
求此模型的最小函数依赖集。如果该模型不是3NF,请将此模型分解为3NF。
A、Itwon’thelptheAmericaneconomytoturnaround.B、Itwon’tdoanygoodtothemajorcommercialbanks.C、Itwillwintheapp
最新回复
(
0
)