A truck can spend three hours inside a receiving facility without spending three hours waiting for a dock. For a carrier reviewing customer profitability, that difference changes the question to ask before repricing a lane: which part of the stop consumed capacity, and which part can the customer or carrier actually change? This Freight Cost Resource examines federal detention-study methods verified November 2. It reports no new detention estimate or completed research finding.
FMCSA’s research project page identifies a limitation in earlier studies: they could not separate ordinary loading and unloading from delays before that work began. Its background numbers describe earlier research, including a 2014 study, rather than the current frequency of detention. FreightNews’s operating inference is that a facility-entry timestamp and an exit timestamp establish elapsed presence, but do not explain the work performed between them. A long visit is a useful flag for investigation, not a complete account of preventable delay.
DOT’s June 2024 privacy assessment describes how the newer study was designed to add that missing context. A facility geofence would trigger driver questions about arrival, including whether the truck was early, late, on time or detained. A departure summary could be corrected when the vehicle was safely stopped. Order and appointment information from transportation-management systems would be combined with telematics and electronic-log data. These are documented study methods, not instructions requiring fleets to install a particular product.
A carrier can apply the measurement principle without treating a location ping as a verdict. FreightNews recommends an event record containing the scheduled appointment, actual arrival, accepted check-in, dock assignment, start and finish of loading or unloading, paperwork release and departure. Add the reason for each material gap and identify whether the timestamp came from a driver, a facility message or an automated system. Drivers should provide corrections only when safely stopped. Mark missing milestones as unknown instead of automatically assigning the whole interval to the receiver.
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Commercial billing needs a separate comparison. Review the actual agreement’s free-time allowance, clock-start condition, exclusions, notification requirements and supporting documents before calculating an invoice. The study’s measurement approach does not establish a universal payment trigger. For example, an early arrival followed by loading at the agreed appointment can create substantial facility time without demonstrating that the customer missed the appointment. That is an illustration, not a report about a particular shipment. The same event record can support a customer discussion while leaving contractual interpretation to the parties.
Duty status answers another question. Current 49 CFR 395.2 includes loading, unloading, related attendance and readiness among on-duty activities, with specified exceptions elsewhere in its definition. A commercial free-time allowance does not classify a driver’s work or establish that waiting qualifies as rest. Keep the billing calculation and the accurate duty record connected by the shipment reference, while evaluating each under its own requirements.
For a monthly account review, compare similar stops and appointment conditions, then separate productive handling from unexplained gaps. Ask whether a change to check-in, paperwork release or loading readiness could recover the next truck turn. Price the remaining equipment commitment using documented time and service requirements. The market benefit is a more defensible capacity and customer-cost conversation: a detention invoice measures what the agreement permits billing, while a stop timeline helps explain where the operation lost usable time. Neither number alone answers both questions.