"small roads" is a correct and usable phrase in written English.
You can use it when referring to narrow roads that have a smaller capacity for traffic or a smaller size overall. For example, "The small roads of the countryside are lined with blooming apple trees."
Erie Narrow Gauge System - also Pennsy narrow gauge system and miscellaneous small roads, Penna.
(The GPS unit I rented was invaluable in helping navigate the small roads of the region).
Most serious crashes occur not on motorways, but on small roads.
Trucks carrying big towers and blades must sometimes move with police escorts and avoid certain overpasses or small roads.
One pothole is neither here nor there, but this is a representative sample of the pavement for an entire 15-mile stretch of three separate small roads.
Choose a museum, and the map will shift so that the small roads and landmarks needed to navigate to that museum appear, and other street names fade away.
As in Jodhpur, a clock tower leads you to a network of small roads and a bazaar for fabrics, jewels, spices, embroidery and leather goods.
Hockney was a familiar sight here a few years back, painting at his easel on the wide grass verges along the small roads leading north from the village.
This will help you to find the smaller hidden roads I use; the big roads are beautiful but it's the small roads that take it to another level.
International experience shows that higher and more rigorously observed limits on motorways, combined with lower limits on small roads, strongly help to reduce road casualties.
Here in the Mae Klong region south of Bangkok, once a thriving shrimp-growing area, abandoned farms line the small roads off the highway.
