Vehicle PM Schedule Tracker

Preventive maintenance services vehicles on a schedule (by time or mileage) to catch wear before it causes failure; reactive maintenance fixes things after they break. Preventive costs more in scheduled services but far less overall — it prevents the expensive failures, unplanned downtime, cascading damage and safety risks that reactive maintenance suffers. The economics are decisive: a scheduled service is a fraction of the failure it prevents, and planned downtime is a fraction of the cost of a breakdown on the road. Fleets that run reactively pay more, run less, and risk more.

Both, whichever comes first — and it depends on the service and usage. High-mileage long-haul trucks hit mileage intervals first (oil changes by miles); low-mileage local or seasonal vehicles hit time intervals first (oil degrades with time even if the truck barely moves). The OEM service schedule specifies both; the rule is service at whichever threshold arrives first. This tracker uses date-based due dates as the common denominator — update them based on whichever interval (miles or months) will trigger first for each vehicle's actual usage pattern.

For commercial motor vehicles, effectively yes: FMCSA regulations (49 CFR 396) require that every commercial vehicle be systematically inspected, repaired and maintained, with records kept. The annual DOT inspection is mandatory. Beyond the specific requirements, a documented maintenance program is what demonstrates compliance and protects you in liability situations — a crash investigation will examine maintenance records, and 'we maintained it on schedule, here's the proof' is a very different position from gaps and guesswork. Tracking PM isn't just good practice; it's part of the regulatory and liability framework for operating commercial vehicles.

Enough lead time to schedule the shop and the vehicle's availability without disrupting operations — two weeks is a reasonable default for routine PM, longer for major services or the DOT annual inspection that may need booking. The goal is planned downtime: catching a service in the amber window lets you slot it into a low-demand period rather than pulling a truck off a load. A service flagged only when it's already overdue forces the reactive scramble the whole system exists to avoid. The right window turns maintenance from an interruption into a scheduled, manageable routine.