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
2023-07-05
16
管理
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. [br] 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 accuracyof 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://tihaiku.com/zcyy/2809686.html
相关试题推荐
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Sleepiscrucialforgoodhealth.Ithelpsmemoryand【B1】______,keepsyouf
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,
ThenorthernItaliancityofMilanbannedalltrafficfromitsstreetsfor1
ThenorthernItaliancityofMilanbannedalltrafficfromitsstreetsfor1
ThenorthernItaliancityofMilanbannedalltrafficfromitsstreetsfor1
随机试题
ThingstobeTaughtinEverySchoolI.Introduction:Imp
OneofthebasicingredientsofAmericanpopularcultureisconsumption,and
心尖区舒张期杂音可见于()。A.风湿性心脏瓣膜病,二尖瓣狭窄 B.左房黏液
某病人尿素氮报告是14.4mmol/L,他的尿素的浓度值为()A.3.6mmo
中国药典对混悬型软膏剂的检查项目有A.金属性异物 B.装量差异 C.粒度不得
29、简述国网公司对隔离开关的完善化有什么要求?(P157)
在安全防范服务的要求中,对值班记录叙述不正确的是()。A:记录及时、齐全、规范
—笔借款合同可以选择多种还款方式。()
美国心理学家布鲁姆将教育目标分为( )A.认知目标 B.态度目标 C.情感
男,21岁。自觉右侧后牙胀痛不适3天,开闭口运动时疼痛加重,伴低热。检查:表面有
最新回复
(
0
)