On surface routes, transfers are issued by vehicle operators.

It is a major surface route through western areas of Metro Detroit.

Lines that ran in open cut and surface routes were shut down for two days.

These surface routes provide service along the length of the road.

It is entirely surface route, much of it divided carriageway.

It was the first subway line to replace surface routes completely.

The system has evolved to feature a wide network of surface routes with the subway lines as the backbone.

The surface routes are divided into several divisions.

A transfer is required to connect between the subway system and these surface routes:.

All of Illinois 37 is an undivided surface route.