问题
I am trying to show traffic information on OpenStreetMap. Considering that the traffic information is a value from 0 to 3 (wich means bad, regular and free) and. also consider that value is changing in a certain frequency. Does anyone has a suggestion to make this work? Maybe drawing polylines in the map, I prefer to stay simple. My aplication use Leaflet maps and node.js
来源：https://stackoverflow.com/questions/45312914/display-traffic-data-with-maps