A driver with an air-boost hydraulic brake vehicle asks whether the Nova Scotia manual treats it the same as an air-actuated hydraulic brake system. What is the best answer?

1. No. Air-actuated hydraulic requires the air brake endorsement, while air-boost hydraulic does not according to the manual
2. Yes. Both always require the endorsement and both lose all service braking if air is lost
3. No. Air-boost hydraulic is the only system that requires the endorsement
4. The manual does not distinguish the two systems