(01 May 2022, 3:03 pm)Adrian wrote It's not, but the bus is very unlikely to have been over capacity. It's more likely that customers have opted to ignore the safety advice, and there's very little a driver can do to police that on a limited stop service, which is predominantly running on the A19.
There's plenty of laybys along the A19, or sliproads for that matter. Pretty sure it is the driver's responsibility to ensure safety measures such as not sitting on stairs are followed. I'd say allowing passengers to sit on stairs while travelling at high speeds breaches the PSV Regs "A driver and a conductor shall take all reasonable precautions to ensure the safety of passengers who are on, or who are entering or leaving, the vehicle". Also, seems highly unlikely many passengers would opt to sit on uncushioned stairs for an hour and a half if seats were available.