Which blood alcohol thresholds apply to the holder of a professional Class A licence driving a bus or lorry in Chile?

1. A special zero limit of 0.00 g/l applies to professional drivers only
2. The same thresholds as any other driver: more than 0.3 and less than 0.8 g/l is 'bajo la influencia del alcohol', and 0.8 g/l or above is 'estado de ebriedad'
3. 0.8 g/l, but only while off duty in a commercial vehicle
4. 1.2 g/l on rural highways