Why would the driver check the integrity of the gas Tanks that is a specialized Inspectors job A Risk assessment should be carried out by the Driver A Risk assessment is a Book dedicated to that bus and in it a list of what the bus driver has to check and sign off, yes it is not a perfect system he could not bother and just sign off with out doing this, then there is only one person responsible, there is NO perfect safety system it all boils down to the individual