The idea has proved popular with customers―they can now travel in air-conditioned comfort and because the new cabs are metered, they don't have to argue over fares.
2015年12月四级真题（第一套）听力 Section A
柯林斯高阶英汉双解学习词典释义
N-COUNT
计量仪;计量表
A meter is a device that measures and records something such as the amount of gas or electricity that you have used.
To meter something such as gas or electricity means to use a meter to measure how much of it people use, usually in order to calculate how much they have to pay.