Upon logging 500,000 miles or reaching 20 years of age, whichever occurs first, buses shall be removed from regular services. Request for replacement buses shall be included in the budget requests, for the fiscal year in which buses are scheduled for replacement. The bus may remain in regular service, if in good condition, until the new bus is received.
The service records and mechanical condition of each bus removed from regular service shall be evaluated by the Unit Commander. When it is deemed to be uneconomical to continue using the bus, it shall be permanently removed from the fleet. When the bus is in good condition, it shall be assigned to the relief bus fleet. These buses shall be used as temporary replacements for buses taken out of service for maintenance, and when there is a shortage of buses due to an unforeseen activity or emergency.
Buses assigned to the relief bus fleet shall be evaluated annually by the Unit Commander. Buses found to be uneconomical to repair or maintain shall be permanently removed from the fleet. Annually, a memorandum shall be placed in the maintenance file for each bus retained in the relief bus fleet, detailing the evaluation.