1. A fixed, inflexible path or course of travel that cannot be deviated from or modified
The bus follows a rigid route every day without any stops in between.
O ônibus segue uma rota rígida todos os dias sem qualquer parada no meio do caminho.
2. In logistics or transportation, a predetermined sequence of destinations that must be followed in order
The delivery company uses a rigid route system to ensure efficient service.
A empresa de entrega usa um sistema de rota rígida para garantir um serviço eficiente.