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
57
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 drivers do if they want to pass unmanaged junctions smoothly?
选项
A、They must wait patiently until traffic lights turn green.
B、They need to help traffic police to regulate traffic flow.
C、They can drive through the red lights if nobody is around.
D、They have to adjust the speed in time for the green lights.
答案
D
解析
事实细节题。根据定位句可知,在管理不善的交叉路口,驾驶过程让人懊恼,还会耗油,要想实现顺畅的行驶,就意味着要调节车速,让车辆在到达交通灯时总遇到绿灯便可。故正确答案为D)“他们必须调节速度以及时赶上绿灯”。
转载请注明原文地址:https://tihaiku.com/zcyy/3439163.html
相关试题推荐
[originaltext]Asthecarindustrydevelops,trafficaccidentshavebecomea
[originaltext]Asthecarindustrydevelops,trafficaccidentshavebecomea
Accordingtothereport,about60%oftrafficjamsinthiscity______(是由行车不慎造成的)
[originaltext]Whydon’tbirdsgotlostontheirlongmigratoryflights?Sci
[originaltext]Whydon’tbirdsgotlostontheirlongmigratoryflights?Sci
[originaltext]Whydon’tbirdsgotlostontheirlongmigratoryflights?Sci
Trafficfacilitiesshouldbeimprovedasquicklyaspossible______.(以减少交通事故的数量)
Itwasaterribletrafficaccident.Fivepassengerswerekilled,andelevenwere
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
随机试题
A.fightingB.subjectsC.certainlyD.questionE.resultinF.further
[originaltext]W:Hi,Michael.Icanhardlyrecognizeyou.Whyareyoudressedu
促进肺心病发生心力衰竭的因素有()。A.电解质紊乱所致的心律失常 B.高能
关于功能性矫治器,下列说法错误的是A.功能性矫治器,主要用于口面肌肉功能异常所引
中央银行票据是一种重要的货币政策手段,其发行目的并不在于筹集资金。( )
以下几个财务指标与基金利润有关的是()。 Ⅰ.本期利润 Ⅱ.本期已实现收益
A.抛射剂B.乳化剂C.抗氧剂D.潜溶剂E.助悬剂压缩CO是
A.蓄积 B.第二相反应 C.药物相互作用 D.生物等效性 E.酶抑制作
目前国内医疗用气雾剂最常用的抛射剂是A.烷烃 B.空气 C.氢氟烃类 D.
治疗严重房室传导阻滞宜选用A.肾上腺素 B.去甲肾上腺素 C.异丙肾上腺素
最新回复
(
0
)