Fleet Management Software Product Specification Template

Vehicle tracking and the dispatch interface. These are the real-time operational surfaces that dispatchers and fleet managers use all day. If tracking data is stale (more than 30 seconds old), the dispatch board is cluttered, or the map view cannot handle 100+ vehicles without lagging, the product fails at its most basic job. Build and stress-test these surfaces first.

Design the data model to support vehicle-type-specific attributes (fuel type, cargo capacity, weight rating, refrigeration capability) while keeping the tracking and dispatch interfaces consistent. Route optimization must account for vehicle constraints (a refrigerated delivery cannot go on a standard van). Maintenance schedules differ by vehicle type (a box truck has different PM intervals than a sprinter van). Use vehicle type as a first-class entity in your data model, not an afterthought.

Integrate. Building telematics hardware is a different business with different expertise (hardware manufacturing, cellular certification, installation logistics). Most fleets already have or can easily install OBD-II devices from Samsara, Geotab, or CalAmp. Build integrations with the top 3 to 4 device providers and focus your engineering on the software platform. Use the [PRD template](/templates/prd-template) to spec each integration as a standalone feature area.

Define every screen the driver sees during a typical day: login, route overview, navigation to next stop, stop arrival actions (POD capture, signature, notes), route completion summary. Specify offline behavior (the driver must be able to view the route and capture PODs without connectivity). Define GPS accuracy requirements (within 10 meters) and battery consumption targets (the app should not drain more than 15% battery over an 8-hour shift). Test on 3-year-old mid-range Android devices, not the latest flagship.

For US commercial fleets: ELD compliance (FMCSA mandate for vehicles over 10,001 lbs), DVIR (pre-trip and post-trip inspections), HOS record keeping, and IFTA fuel tax reporting. CDL and medical certificate tracking prevents drivers from operating with expired credentials. Drug and alcohol testing documentation is required for DOT-regulated drivers. Check state-specific requirements (California has additional emissions and idle-time regulations). Validate your compliance scope using frameworks like [RICE](/frameworks/rice-framework) to rank requirements by regulatory penalty risk. ---