If you're traveling alone, let someone know your primary and secondary routes.

The highway does not cross any primary or secondary routes.

So in choosing secondary routes, the management had considered grades.

Three main national secondary routes pass through the county.

The system would also control signals along secondary routes, for maximum flow.

This is the last section of A72, where it is the secondary route on another primary road.

Sooner or later the Dreen would find a secondary route of attack.

In the 1980s, most secondary routes were given to the counties, but 834 was promoted to a primary route.

The secondary routes often narrow to two lanes with a wider shoulder.

I've started an evacuation of the forces in the pocket, using secondary routes.