Real-Time information traffic

This is because vehicles themselves are starting to relay real-time traffic data-and the more that do so, the more accurate traffic information will become.

这是因为装备这种设备的车辆自身也在传递着实时行车信息。传递信息的车辆越多，交通信息就越精确。

Think in terms of a subway map, but add in layers of data like water and sewer lines, power grids, and real time traffic information.

例如，在地铁地图上增加其他一些数据，如供水和排水管道、电网和实时交通信息等。

For instance, it makes sense to cache map data to reduce response time, but it's often impossible or impractical to cache results of search queries or real-time traffic information.

比如，可以缓存地图数据来减少响应时间，但通常并不适合将搜索查询结果或者实时交通信息进行缓存。