An operator of a relevant service that is a general route service or a school service must provide the service in accordance with the operator’s advertised schedules unless—
(a) the operator is prevented from doing so by an unforeseeable circumstance; orExamples of an unforeseeable circumstance—• an incident• an accident, whether or not involving the vehicle providing the public passenger service• flooding or storm damageExample of a foreseeable circumstance—traffic volume
(b) the schedules, and services under the schedules, are not realistically achievable.