1. A road of lower importance than a main highway, typically connecting towns or rural areas with primary routes
We took a secondary road to avoid traffic on the main highway.
Pegamos uma estrada secundária para evitar o trânsito na estrada principal.
2. A road classified as inferior in rank to federal or state highways in a country's road system
The secondary roads in this region need better maintenance.
As estradas secundárias nesta região precisam de melhor manutenção.