In 2019, the municipality of Córrego Fundo, Brazil, explained that shops need not install a dedicated priority checkout, but must not subject disabled people, those aged sixty or over, pregnant or nursing customers, adults with infants, or obese customers to unnecessary waiting. If a queue forms at the priority checkout, those customers may receive precedence at any other register.
The priority line is therefore not a fixed lane. When it becomes congested, priority expands across the entire checkout system. The rule protects people from prolonged waiting, not merely their access to a signposted counter.