英语阅读

听力入门英语演讲VOA慢速英语美文听力教程英语新闻名校课程听力节目影视听力英语视频

经济学人文艺新闻在线试听:车费的变动 寻找出租车供需平衡解决方法(上)

比目鱼 于2016-05-25发布 l 已有人浏览
增大字体 减小字体
对与很多人来说,深夜外出后拿出智能手机叫一辆优步的车回家似乎是一种常见的仪式了。然而打的费却比平时高出了三倍。像很多经济学家钟爱的定律一样,这种时不时困饶着优步用户的“动态定价策略”虽有效却极不受欢迎。
    小E英语欢迎您,请点击播放按钮开始播放……

 ecob20160525.jpg

Free exchange

A fare shake

Jacking up prices may not be the only way to balance supply and demand for taxis

IT IS a familiar ritual for many: after a late night out you reach for your smartphone to hail an Uber home, only to find—disaster—that the fare will be three times the normal rate. Like many things beloved by economists, “surge pricing” of the sort that occasionally afflicts Uber-users is both efficient and deeply unpopular. From a consumer's perspective, surge pricing is annoying at best and downright offensive when applied during emergencies. Extreme fare surges often lead to outpourings of public criticism: when a snowstorm paralysed New York in 2013, celebrities, including Salman Rushdie, took to social media to rail against triple-digit fares for relatively short rides. Some city governments have banned the practice altogether: Delhi's did so in April.

Uber is sticking with surge pricing for now, but Jeff Schneider, one of its machine-learning experts, recently suggested that the company is interested in developing systems that rely on technology, rather than price, to allocate cars. Even if such a technological fix proves elusive, however, local governments do not need to regulate or ban surge pricing to reduce its sting.

Surge (or dynamic) pricing relies on frequent price adjustments to match supply and demand. Such systems are sometimes used to set motorway tolls (which rise and fall with demand in an effort to keep traffic flowing), or to adjust the price of energy in electricity markets. A lower-tech version is common after natural disasters, when shopkeepers raise the price of necessities like bottled water and batteries as supplies run low. People understandably detest such practices. It offends the sensibilities of non-economists that the same journey should cost different amounts from one day or hour to the next—and more, invariably, when the need is most desperate.

Yet surge fares also demonstrate the elegance with which prices moderate a marketplace. When demand in an area spikes and the waiting time for a car rises, surge pricing kicks in; users requesting cars are informed that the fare will be a multiple of the normal rate. As the multiple rises, the market goes to work. Higher fares ration available cars by willingness to pay: to richer users, in some cases, but also to those less able to wait out the surge period or with fewer good alternatives. Charging extra to those without good alternatives sounds like gouging, yet without surge pricing such riders would be less likely to get a ride at all, since there would be no incentive for all the other people requesting cars to drop out.

 1 2 下一页

分享到

添加到收藏

英语新闻排行