全新版大学英语综合教程第四册UNIT2-2

 
     Steve Shladover outlines the benefits to be gained from vehicles that could drive themselves and discusses how this could be achieved.
      斯蒂夫·施多弗阐述了能自动运行的车辆的诸多裨益，并详细论述了如何将其变为现实。 

 

 
 

Intelligent Vehicles

Steve Shladover

1    Even when cars were still young, futurists began thinking about vehicles that could drive themselves, without human help. Perhaps the best known of these conjectures¹ was the General Motors Futurama, the hit of the 1939 New York World's Fair. Now, at the start of the new century, it's worth taking a fresh look at this concept and asking how automation might change transportation and the quality of our lives.
智能车辆

斯蒂夫·施多弗

      还在汽车问世之初，未来学家就开始设想无需人来操纵便能自动运行的车辆将是什么样儿的。这类设想最出名的或许是1939年纽约世界博览会上轰动一时的由通用汽车公司推出的“未来城市风光”。今天，在世纪之初，以新的目光去审视这样的设想，去探讨自动化将如何改变交通以及我们的生活质量，是颇具价值的。
 

 
 
  　
2    Consider some of the implications of cars that could drive themselves.

● We might eliminate the more than ninety percent of traffic crashes that are caused by human errors such as misjudgments and inattention.
● We might reduce antisocial driving behavior such as road rage, thereby² significantly reducing the stress of driving.
● The entire population, including the young, the old, and the infirm, might enjoy a higher level of mobility³ without requiring advanced driving skills.
● The luxury of being chauffeured⁴ to your destination might be enjoyed by all, not just the wealthiest individuals.
● Fuel consumption and pollution might be reduced by smoothing traffic flow and running vehicles close enough to each other to benefit from aerodynamic drafting.
● Traffic-management decisions might be based on firm knowledge of vehicle responses to instructions, rather than on guesses about the choices that drivers might make.
● The capacity of a freeway lane might be doubled or tripled, making it possible to accommodate growing demands for travel without major new construction, or, equivalently, today's level of congestion⁵ might be reduced, enabling travelers to save time.
      且来看一看能自动运行的汽车意味着什么。

      ● 我们或许能消除90%以上由于判断失误以及疏忽等人为因素造成的交通事故。
      ● 我们或许能减少野蛮开车这类有害公众利益的开车行为，从而大大减轻行车压力。
      ● 社会全体成员，包括老老少少与体弱者，也许都不需习得娴熟的驾车技巧就能较为自由地奔驰了。
      ● 被开车接送也许会成为世人共同的享受，而不仅仅是最富裕阶层的一种奢侈。
      ● 车流通畅，相互紧随行驶的车辆能利用前车产生的较小的空气阻力，这些都可能减少油耗和污染。
      ● 交通管理将会建立在充分了解车辆对指令的应变能力的基础上，而非基于对车辆驾驶者可能采取的行动的粗略估测。
      ● 高速公路的车容量会增加一倍或二倍，使其不必大兴土木就能适应不断增长的行车需求；或者，同样重要地，目前交通拥堵的程度能得到缓解，以使行车者节省时间。
 

 
 
 

Is it feasible?

3    This is now a realistic prospect⁶. With advances in technology we can readily visualize⁷ your trip on an automated⁸ highway system.
是否可行？

      目前这已成为一个可以实现的希望。随着技术的进步，我们不难设想自动化公路系统上的行车过程。 

 
 
 
4    Imagine leaving work at the end of the day and needing to drive only as far as the nearest on-ramp to the local automated highway. At the on-ramp, you press a button on your dashboard to select the off-ramp closest to your home and then relax as your car's electronic systems, in cooperation with roadside electronics and similar systems on other cars, guide your car smoothly⁹, safely, and effortlessly toward your destination. En route you save time by maintaining full speed even at rush-hour traffic volumes. At the end of the off-ramp you resume normal control and drive the remaining distance to your home, better rested and less stressed than if you had driven the entire way.
      且来设想，工作一天下班后，只需开车至最近的一个自动公路入口匝道。到了入口匝道，在仪表板上按一下按钮选择离家最近的出口匝道，随后就休息放松，由车上的电子系统与路旁的电子装置以及其他车辆上类似的系统合作，把车平稳、安全、顺畅地开往目的地。即使是在车流量最大的高峰时段，也能一路全速行驶，从而节省时间。下了出口匝道，再照平常那样驾驶，开过余下的路程回家，那要比自己全程驾驶省力轻松许多。
 

 
 
  
5    Although many different technical developments are necessary to turn this image into reality, none requires exotic technologies, and all can be based on systems and components¹⁰ that are already being actively¹¹ developed in the international motor vehicle industry. These could be viewed as replacements¹² for the diverse functions that drivers perform every day: observing the road, observing the preceding vehicles, steering¹³, accelerating, braking, and deciding when and where to change course.       要把这一景象变成现实固然需要各种不同的技术发展，但也无需什么匪夷所思的技术，所有的技术都能以国际车辆制造业正在积极开发研制的各种系统和部件作为基础。这些技术可以被看作是车辆驾驶者日常开车所起各种作用的替代：观察路况，留意前行车辆，掌握方向，加速，刹车，变道。
 

 
 
 

Observing the road

6    Researchers have developed a road-reference and sensing system that makes it possible to determine accurately¹⁴ a vehicle's position and orientation¹⁵ relative to the lane's center. Cheap permanent magnets are buried at four-foot intervals¹⁶ along the lane centerline and detected by magnetometers mounted under the vehicle's bumpers¹⁷. . These meters provide the information used by the vehicle's control computer to determine its exact position of the vehicle.
观察路况

      研究人员开发了一种路况参考及传感系统，这些能准确判断车辆的方位及所在车道中心的相应定位。价格低廉的永磁体以4英尺的间隔埋设在车道中心线上，车辆保险杆下安装着的磁强计能够测知。这些磁强计向车上的计算机控制台提供信息，以断定车辆的确切方位。 

 
 
 
7    Other researchers have used computer vision systems to observe the road. (1) These are vulnerable to weather problems and provide less accurate measurements, but they do not require special roadway installations, other than well-maintained lane markings.
      其他研究人员利用计算机图像系统观察路况。这类系统易受气候变化的影响，提供的数据不够精确，但它们不需要特别的道路设置，只需要将路面标志维护好就行了。
 

 
 
  

Observing preceding vehicles

8    The distances and closing rates to preceding vehicles can be measured by a radar¹⁸ or a laser rangefinder. Both technologies have already been implemented²⁰ in commercially available systems in Japan and Europe. The laser systems are currently less expensive, but the radar systems are more effective at detecting dirty vehicles and operating in adverse²¹ weather conditions. As production volumes increase and unit costs decrease, the radars²² are likely to find increasing favor.
留意前行车辆

      与前行车辆的车距及接近时的速度可用雷达或激光测距仪测定。这两项技术已经在日本和欧洲投入商业运用。目前激光系统比较便宜，但雷达系统能更加有效地测知野蛮行驶的车辆，能更加安全地在天气恶劣时操作。随着产量的提高，成本的降低，雷达系统将会越来越受欢迎。 

 
 
 

Steering, accelerating and braking

9    The equivalents of these driver muscle functions are electromechanical devices installed in the automated vehicle. They receive electronic commands from the onboard control computer and then apply the appropriate steering angle, throttle²³ angle, and brake pressure by means of small electric motors. Early versions of these devices are already being introduced into production of vehicles, where they receive their commands directly from the driver's inputs²⁴ to the steering wheel and pedals. These decisions are being made for reasons largely unrelated to automation. Rather they are associated with reduced energy consumption, simplification of vehicle design, enhanced ease of vehicle assembly, improved ability to adjust performance to match driver preferences, and cost savings²⁵ compared to traditional direct mechanical control devices.
掌握方向、加速和刹车

      相当于车辆驾驶者肌功能的是安置在自动车辆上的电动机械装置。它们接收车上计算机控制台发出的电子指令，再凭借小型电力发动机恰当地控制方向、油门大小以及刹车紧急程度。车辆生产已经采用这类装置的最初样本，它们通过驾驶者给方向盘和踏板的输入信息直接获得指令。决定开发这类产品大都与自动化无关。与之有关的因素有降低能耗、简化车辆设计、进一步提高车辆装配效率、改善根据车辆驾驶者的喜好调节性能的能力，以及低于传统的机械直控装置的成本等。 

 
 
  

Deciding when and where to change course

10    Computers in the vehicles and those at the roadside have different functions. Roadside computers are better suited for traffic management, setting the target speed for each segment and lane of roadway, and allocating²⁶ vehicles to different lanes of a multilane automated facility. The aim is to maintain balanced flow among the lanes and to avoid obstacles or incidents that might block a lane. The vehicle's onboard computers are better suited to handling decisions about exactly when and where to change lanes to avoid interference with other vehicles.
决定何时何处变道

      车用计算机与路边装置的计算机功能不同。路边设置的计算机更适用于交通管理，如为不同路段和车道设定限速，通过多车道自动化设施为车辆安排不同的车道。其目的是使各车道的车流量保持平衡，避免可能堵塞车道的障碍或事故。车用计算机更适用于精确地判断在什么时间和位置改变车道，以避免与其他车辆碰撞。 

 
 
  

Remaining challenges

11    There remain a number of difficulties to be overcome. These are mainly technical, but there are in addition a number of nontechnical challenges that need to be addressed. These involve issues of liability, costs, and perceptions.
尚存的挑战

      尚有许多困难有待克服。主要是技术性难题，但此外也有不少非技术性的挑战需要面对，其中包括行车责任、成本以及观念等问题。 

 
 
  
12    Automated control of vehicles shifts liability for most crashes from the individual driver (and his or her insurance company) to the designer, developer, and vendor²⁷ of the vehicle and roadway control systems. Provided the system is indeed safer than today's driver-vehicle-highway system, overall liability exposure should be reduced. But its costs will be shifted from automobile²⁸ insurance premiums²⁹ to the purchase or lease price of the automated vehicle and toll³⁰ for use of the automated highway facility.
      车辆的自动控制把大多数事故的责任从车辆驾驶者个人（及其保险公司）转移到设计者、研制者以及车辆和道路控制系统的经销商身上。如果这一系统的确比当今的车辆驾驶者—车辆—公路系统安全，总体责任风险就会减少。但其成本会从汽车保险金转移到自动车辆的售价或租金，以及自动公路设施的使用费上来。
 

 
 
  
13    All new technologies tend to be costly³¹ when they first become available in small quantities, then their costs decline as production volumes increase and the technologies mature. We should expect vehicle automation technologies to follow the same pattern. They may initially³² be economically viable³³ only for heavy vehicles (transit³⁴ buses, commercial trucks) and high-end passenger cars. However, it should not take long for the costs to become affordable³⁵ to a wide range of vehicle owners and operators, especially with many of the enabling technologies already being commercialized for volume production today.
      任何新技术在最初小批量供应时都相对昂贵，以后随着产量的增长与技术的完善，成本就会降低。我们相信车辆自动控制技术也将遵循这一模式。从经济角度考虑，这类技术在最初阶段或许只能应用于重型车辆（如公交车、货运卡车）和高级客车。然而，不用多久，其成本就能为广大车辆拥有者和驾驶者所接受，尤其是目前不少可以应用的技术已经走向市场，开始了批量生产。
 

 
 
  
14    The largest impediment to introduction of electronic chauffeuring³⁶ may turn out to be the general perception that it's more difficult and expensive to implement¹⁹ than it really is. If political and industrial decision makers³⁷ perceive automated driving to be too futuristic, they will not pay it the attention it deserves and will not invest their resources toward accelerating its deployment³⁸. The perception could thus become a self-fulfilling prophecy.
      电子驾驶应用的最大障碍可能在于一种普遍的观念，认为这一技术的应用比实际情况更困难，更昂贵。如果政治决策者和企业决策者认为自动驾驶过于超前，他们就不会予以应有的关注，就不会投入资源，促使其早日为人们利用。这样的话，这一观念就可能成为一种终将实现的预言。
 

 
 
  
15    It is important to recognize that automated vehicles are already carrying millions of passengers every day. Most major airports have automated people movers that transfer passengers among terminal buildings. Urban transit lines in Paris, London, Vancouver, Lyon, and Lille, among others, are operating with completely automated, driverless vehicles; some have been doing so for more than a decade. Modern commercial aircraft operate on autopilot for much of the time, and they also land under automatic control at suitably equipped airports on a regular basis.
      重要的是，要看到，每天已有千百万人乘坐自动化车辆。大多数颇具规模的机场都有自动控制的客车把乘客从一个航站楼转到另一个航站楼。不少城市公交线路，如巴黎、伦敦、温哥华、里昂和里尔等，都是由全自动控制的无人驾驶车辆运行的，有些已运行了十多年。现代商用飞机大多时间是由自动驾驶仪操纵的，在装备完善的机场，这些飞机一向在自动控制指挥下着陆。
 

 
 
  
16    Given all of this experience in implementing³⁹ safe automated transportation systems, it is not such a large leap to develop road vehicles that can operate under automatic control. That should be a realistic goal for the next decade. The transportation system will thus gain substantial benefits from the revolution in information technology.
      考虑到所有这些安全运用自动化交通运输系统的经验，开发由自动控制操纵的公路车辆算不上什么大的飞跃。这应该是未来十年中的一个现实目标，交通运输系统也就会大大得益于信息技术革命。
 

 
 

 

 

   

 

1 conjectures   

推测，猜想( conjecture的名词复数 )

参考例句：

• That's weighing remote military conjectures against the certain deaths of innocent people. 那不过是牵强附会的军事假设，而现在的事实却是无辜者正在惨遭杀害，这怎能同日而语！
• I was right in my conjectures. 我所猜测的都应验了。

2 thereby   

adv.因此，从而

参考例句：

• I have never been to that city,,ereby I don't know much about it.我从未去过那座城市，因此对它不怎么熟悉。
• He became a British citizen,thereby gaining the right to vote.他成了英国公民，因而得到了投票权。

3 mobility   

n.可动性，变动性，情感不定

参考例句：

• The difference in regional house prices acts as an obstacle to mobility of labour.不同地区房价的差异阻碍了劳动力的流动。
• Mobility is very important in guerrilla warfare.机动性在游击战中至关重要。

4 chauffeured   

v.受雇于人的汽车司机( chauffeur的过去式 )

参考例句：

• He was chauffeured to all his meetings. 他由司机开车送去参加所有的会议。
• He was chauffeured away soon thereafter with no public statement. 在那之后他没有做出任何公开声明，很快被车送离。 来自互联网

5 congestion   

n.阻塞，消化不良

参考例句：

• The congestion in the city gets even worse during the summer.夏天城市交通阻塞尤为严重。
• Parking near the school causes severe traffic congestion.在学校附近泊车会引起严重的交通堵塞。

6 prospect   

n.前景，前途；景色，视野

参考例句：

• This state of things holds out a cheerful prospect.事态呈现出可喜的前景。
• The prospect became more evident.前景变得更加明朗了。

7 visualize   

vt.使看得见，使具体化，想象，设想

参考例句：

• I remember meeting the man before but I can't visualize him.我记得以前见过那个人，但他的样子我想不起来了。
• She couldn't visualize flying through space.她无法想像在太空中飞行的景象。

8 automated   

a.自动化的

参考例句：

• The entire manufacturing process has been automated. 整个生产过程已自动化。
• Automated Highway System (AHS) is recently regarded as one subsystem of Intelligent Transport System (ITS). 近年来自动公路系统(Automated Highway System,AHS)，作为智能运输系统的子系统之一越来越受到重视。

9 smoothly   

adv.平滑地，顺利地，流利地，流畅地

参考例句：

• The workmen are very cooperative,so the work goes on smoothly.工人们十分合作，所以工作进展顺利。
• Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。

10 components   

（机器、设备等的）构成要素，零件，成分； 成分( component的名词复数 )； [物理化学]组分； [数学]分量； （混合物的）组成部分

参考例句：

• the components of a machine 机器部件
• Our chemistry teacher often reduces a compound to its components in lab. 在实验室中化学老师常把化合物分解为各种成分。

11 actively   

adv.积极地，勤奋地

参考例句：

• During this period all the students were actively participating.在这节课中所有的学生都积极参加。
• We are actively intervening to settle a quarrel.我们正在积极调解争执。

12 replacements   

n.代替( replacement的名词复数 )；替换的人[物]；替代品；归还

参考例句：

• They infiltrated behind the lines so as to annoy the emery replacements. 他们渗透敌后以便骚扰敌军的调度。 来自辞典例句
• For oil replacements, cheap suddenly looks less of a problem. 对于石油的替代品来说，价格变得无足轻重了。 来自互联网

13 steering   

n.操舵装置

参考例句：

• He beat his hands on the steering wheel in frustration. 他沮丧地用手打了几下方向盘。
• Steering according to the wind, he also framed his words more amicably. 他真会看风使舵，口吻也马上变得温和了。

14 accurately   

adv.准确地，精确地

参考例句：

• It is hard to hit the ball accurately.准确地击中球很难。
• Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。

15 orientation   

n.方向，目标；熟悉，适应，情况介绍

参考例句：

• Children need some orientation when they go to school.小孩子上学时需要适应。
• The traveller found his orientation with the aid of a good map.旅行者借助一幅好地图得知自己的方向。

16 intervals   

n.[军事]间隔( interval的名词复数 )；间隔时间；[数学]区间；（戏剧、电影或音乐会的）幕间休息

参考例句：

• The forecast said there would be sunny intervals and showers. 预报间晴，有阵雨。
• Meetings take place at fortnightly intervals. 每两周开一次会。

17 bumpers   

（汽车上的）保险杠，缓冲器( bumper的名词复数 )

参考例句：

• Our bumpers just grazed (ie touched each other) as we passed. 我们错车时保险互相蹭了一下。
• Car stickers can be attached to the bumpers or windows. 汽车贴纸可以贴在防撞杆上或车窗上。

18 radar   

n.雷达，无线电探测器

参考例句：

• They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
• Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。

19 implement   

n.(pl.)工具，器具；vt.实行，实施，执行

参考例句：

• Don't undertake a project unless you can implement it.不要承担一项计划，除非你能完成这项计划。
• The best implement for digging a garden is a spade.在花园里挖土的最好工具是铁锹。

20 implemented   

v.实现( implement的过去式和过去分词 )；执行；贯彻；使生效

参考例句：

• This agreement, if not implemented, is a mere scrap of paper. 这个协定如不执行只不过是一纸空文。 来自《现代汉英综合大词典》
• The economy is in danger of collapse unless far-reaching reforms are implemented. 如果不实施影响深远的改革，经济就面临崩溃的危险。 来自辞典例句

21 adverse   

adj.不利的；有害的；敌对的，不友好的

参考例句：

• He is adverse to going abroad.他反对出国。
• The improper use of medicine could lead to severe adverse reactions.用药不当会产生严重的不良反应。

22 radars   

n.雷达( radar的名词复数 )；雷达装置

参考例句：

• Servos for large radars and launchers are either electro-hydraulic or all-electric. 大型雷达和发射装置的伺服系统，不是电动-液压式的，就是全电动式的。 来自辞典例句
• Range-velocity simultaneous pull-off is one of effective measures for countering PD radars. 距离-速度同步拖引干扰是对抗PD雷达的有效方法。 来自互联网

23 throttle   

n.节流阀，节气阀，喉咙；v.扼喉咙，使窒息，压

参考例句：

• These government restrictions are going to throttle our trade.这些政府的限制将要扼杀我们的贸易。
• High tariffs throttle trade between countries.高的关税抑制了国与国之间的贸易。

24 inputs   

n.输入( input的名词复数 )；投入；输入端；输入的数据v.把…输入电脑( input的第三人称单数 )

参考例句：

• Uncheck the inputs checked for optimization in the previous stage. 不测试那些已经测试过的优化了的以前步骤的inputs.（变量参数）。 来自互联网
• Just in case, save in a file the inputs obtained at the previous stage. 以防万一，保存以前步骤获得的inputs（变量参数值）到一个文件中去。 来自互联网

25 savings   

n.存款，储蓄

参考例句：

• I can't afford the vacation,for it would eat up my savings.我度不起假，那样会把我的积蓄用光的。
• By this time he had used up all his savings.到这时，他的存款已全部用完。

26 allocating   

分配，分派( allocate的现在分词 )； 把…拨给

参考例句：

• Administrative practice generally follows the judicial model in allocating burdens of proof. 在分配举证责任方面，行政实践通常遵循司法模式。
• A cyclical multiplexing technique, allocating resources in fixed-time slices. 以固定的时间片分配资源的循环复用技术。

27 vendor   

n.卖主；小贩

参考例句：

• She looked at the vendor who cheated her the other day with distaste.她厌恶地望着那个前几天曾经欺骗过她的小贩。
• He must inform the vendor immediately.他必须立即通知卖方。

28 automobile   

n.汽车，机动车

参考例句：

• He is repairing the brake lever of an automobile.他正在修理汽车的刹车杆。
• The automobile slowed down to go around the curves in the road.汽车在路上转弯时放慢了速度。

29 premiums   

n.费用( premium的名词复数 )；保险费；额外费用；（商品定价、贷款利息等以外的）加价

参考例句：

• He paid premiums on his life insurance last year. 他去年付了人寿保险费。 来自《现代英汉综合大词典》
• Moves are afoot to increase car insurance premiums. 现正在酝酿提高汽车的保险费。 来自《简明英汉词典》

30 toll   

n.过路(桥)费；损失，伤亡人数；v.敲(钟)

参考例句：

• The hailstone took a heavy toll of the crops in our village last night.昨晚那场冰雹损坏了我们村的庄稼。
• The war took a heavy toll of human life.这次战争夺去了许多人的生命。

31 costly   

adj.昂贵的，价值高的，豪华的

参考例句：

• It must be very costly to keep up a house like this.维修这么一幢房子一定很昂贵。
• This dictionary is very useful,only it is a bit costly.这本词典很有用，左不过贵了些。

32 initially   

adv.最初，开始

参考例句：

• The ban was initially opposed by the US.这一禁令首先遭到美国的反对。
• Feathers initially developed from insect scales.羽毛最初由昆虫的翅瓣演化而来。

33 viable   

adj.可行的，切实可行的，能活下去的

参考例句：

• The scheme is economically viable.这个计划从经济效益来看是可行的。
• The economy of the country is not viable.这个国家经济是难以维持的。

34 transit   

n.经过，运输；vt.穿越，旋转；vi.越过

参考例句：

• His luggage was lost in transit.他的行李在运送中丢失。
• The canal can transit a total of 50 ships daily.这条运河每天能通过50条船。

35 affordable   

adj.支付得起的，不太昂贵的

参考例句：

• The rent for the four-roomed house is affordable.四居室房屋的房租付得起。
• There are few affordable apartments in big cities.在大城市中没有几所公寓是便宜的。

36 chauffeuring   

v.受雇于人的汽车司机( chauffeur的现在分词 )

参考例句：

• I can't thank you enough for chauffeuring me around while the car was in for repairs. 当我的车在修理时你为我提供乘车方便，真是感激不尽。 来自互联网

37 makers   

n.制造者，制造商（maker的复数形式）

参考例句：

• The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
• The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》

38 deployment   

n. 部署,展开

参考例句：

• He has inquired out the deployment of the enemy troops. 他已查出敌军的兵力部署情况。
• Quality function deployment (QFD) is a widely used customer-driven quality, design and manufacturing management tool. 质量功能展开(quality function deployment,QFD)是一个广泛应用的顾客需求驱动的设计、制造和质量管理工具。

39 implementing   

v.实现( implement的现在分词 )；执行；贯彻；使生效

参考例句：

• -- Implementing a comprehensive drug control strategy. ――实行综合治理的禁毒战略。 来自汉英非文学 - 白皮书
• He was in no hurry about implementing his unshakable principle. 他并不急于实行他那不可动摇的原则。 来自辞典例句