They usually make arrangements to pay at a later date. No one is turned away because of an inability to pay. Alternate drivers have to be found, usually other OIL staff. This does, however, take them away from their regular duties. If enough notice is given, an alternate driver can be obtained other than regular OIL staff.
Staff have to scurry to find alternate means.
Frequently there are none and trips have to be canceled. Also, these surprise breakdowns are never simple problems to fix and can put the bus out of commission for two to three weeks at a time. During that time, individuals have to curtail their travel. This can be very difficult for the consumer. Backup systems are not readily available.