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
2023-07-08
53
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)“他们必须及时调节速度以赶七绿灯”。
转载请注明原文地址:https://tihaiku.com/zcyy/2818560.html
相关试题推荐
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Bynow,everyoneknowsyousaveenergybyturningoutlights.Andyou【S1】___
Accordingtothereport,about60%oftrafficjamsinthiscity______(是由行车不慎造成的)
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
随机试题
Howoftenhastheaffectsofsmokingandsecond-handsmokebeenreportedinthe
下列关于土方回填压实的基本规定的各项中,正确的是()。A.碎石类土、砂土和爆破
在间歇培养的生长曲线上,活细菌数目最多的是()期。A.缓慢期 B.对数期
消渴,气上撞心。心中疼热,饥而不欲食、食则吐蛔,可诊为:A.太阴病证 B.阳明
下列有关缺陷责任与保险的说法中,正确的是()。A.甲乙双方签订合同中约定缺陷责任
Thechangeinthatvillagewasmiraculou
电能是用途最广泛的能源之一,它属于: A.一次能源B.二次能源C.可再生
招标采购与合同管理风险控制的常用方法包括()。A、规避风险B、降低风险C、消
“小金库”核算,属于私设会计账簿的行为。()
最新回复
(
0
)