1. A road that is less important than a main highway, typically connecting smaller towns or rural areas to major routes
We took a secondary road to avoid traffic on the highway.
Pegamos uma estrada secundária para evitar o trânsito na rodovia.
2. A road with lower traffic volume and typically narrower lanes than primary roads
The secondary roads in the countryside are quiet and scenic.
As estradas secundárias no interior são quietas e cênicas.