Detention Time Cost Calculator
Calculate the true cost of detention at shippers and receivers, including billable detention charges, lost revenue from missed loads, and total financial impact.
Results
Visualization
How It Works
Detention time — the wait at a shipper or receiver beyond contracted free time — is the single largest unpaid cost in trucking. The 2018 DOT OIG report estimated annual industry-wide losses at $1.1B-$1.3B; the 2023 FMCSA driver detention study (49 USC §70202 directed) found 39% of drivers experience uncompensated delays of 2+ hours per week. Time at the dock counts as on-duty-not-driving under 49 CFR §395.2, so it consumes the 14-hour window in §395.3(a)(2) without earning revenue. Detention charges are accessorial fees billed under standard FMCSA broker-carrier contract terms (49 CFR §371) — typically $50-$100/hour after a 2-hour free window — but enforcement depends on what is in the rate confirmation, not industry custom.
The Formula
Detention Charges = Billable Hours x Hourly Rate
Opportunity Cost = Actual Wait x (Truck Variable Cost per Hour + Foregone Linehaul Margin)
Total Cost = Detention Charges + Opportunity Cost - Detention Recovery
Variables
- Free Time — Contracted non-billable wait per rate confirmation; industry standard 2 hours live load/unload, 1 hour drop-and-hook
- Actual Wait — Time from arrival check-in (gate stamp or driver app log) to departure off the property
- Detention Rate — Hourly fee after free time expires — must be in writing on the rate confirmation to be enforceable; FMCSA detention study reports median $65/hour 2023
- Opportunity Cost — Lost margin from time not driving; ATBS estimates $0.55-$0.85/mile gross at typical 50 mph = $27-$42/hour foregone linehaul plus fixed truck cost ~$25-$30/hour
Worked Example
OO arrives at a regional DC at 0600 for a 0700 appointment. Check-in completes at 0615. Door assigned at 0905, dock crew begins unload at 1015, finishes 1230, paperwork signed 1245. Total wait: 6.5 hours. Rate confirmation specifies 2 hours free, $75/hour detention. Billable: 4.5 x $75 = $337.50. Opportunity cost: $25/hour fixed truck cost (insurance/payment/depreciation) + $35/hour foregone linehaul margin = $60/hour x 6.5 = $390. Total economic cost: $727.50. Detention recovery (often paid 60-90 days later, sometimes denied): $337.50 if claim accepted. Net loss after recovery: $390 plus collection effort. Multiply by 100 such events per year (typical OTR) = $39k unrecovered.
Practical Tips
- Document arrival precisely. Time-stamped photo of the gate or shipping office sign, BOL with arrival time, ELD record showing entry to the geofence. The FMCSA detention study found brokers reject roughly 25% of claims for inadequate documentation.
- Get detention terms in writing on the rate confirmation before accepting the load — specific dollar amount per hour, when the clock starts (appointment time vs arrival vs door-assigned), what triggers it, and the dispute window. Verbal "I will pay detention" is unenforceable under typical broker-carrier contracts.
- TIA Code of Ethics §C-3 commits member brokers to detention pass-through but does not bind shippers; only the shipper-broker contract creates legal obligation. If broker pushes back, request the underlying SCAC contract terms or escalate to broker compliance.
- Lay-over pay (>10 hours stuck) and TONU (truck ordered not used, when load cancels after dispatch) are separate accessorials with different rates. Standard ranges per OOIDA tariff data: lay-over $200-$400/day, TONU $150-$300, missed appointment $0-$100.
- On-duty-not-driving status under 49 CFR §395.2 stops the 11-hour driving clock but keeps the 14-hour window running. Sleeper berth status (>=2 hours during qualifying split per §395.1(g)) pauses both clocks — useful only if the dock allows you to reposition to a sleeper-eligible spot.
- High-detention shipper lists circulate on DAT, Trucker Path, and Convoy reviews. Track your own data — average wait by facility, day of week, dock crew shift — and price loads from chronic offenders 10-15% higher to compensate for expected delay.
- Submit detention claims within 24-48 hours of delivery; the typical broker MAP (master agreement) includes a 30-day claim window but many brokers enforce a much shorter informal window. Use load board systems (DAT 360, eShipping, Convoy) that timestamp claim submission.
Frequently Asked Questions
What is the standard free time for loading and unloading?
Industry custom: 2 hours for live load or live unload, 1 hour for drop-and-hook, 3-4 hours for specialty freight (cold chain, hazmat, oversized). The actual contracted free time appears on the rate confirmation — that document controls, not industry custom. Some shippers in the produce, paper, and grocery distribution segments still default to 4-hour free windows.
What is a fair detention rate in 2025?
FMCSA 2023 driver detention study reports median paid detention rate of $65/hour, with ranges $40-$120 across freight segments. Reefer and food-grade haulers command higher rates ($75-$100/hour) due to opportunity cost of route timing. Owner-operators with own authority should price detention to recover at minimum truck variable cost (~$25/hour) plus foregone driving revenue (~$40-$50/hour) — total $65-$75/hour minimum.
Can I refuse to wait for excessive detention?
Legal grounds vary. Broker-carrier contract typically obligates good-faith effort to complete delivery. Walking away mid-wait can trigger breach claims or non-payment of linehaul. The defensible move: document delays, request written authorization to leave from the broker, photograph dock conditions, log status changes. If HOS would expire before completion, FMCSA regulations under 49 CFR §392.3 (driver fatigue) and §392.6 (schedules to conform with speed limits) actually require you to stop — that is a regulatory shield against breach claims.
How does detention affect my HOS clock?
Wait time at the dock is on-duty-not-driving status under §395.2. It does not consume the 11-hour driving cap but counts against the 14-hour window and the 60/70-hour cycle. A 6-hour detention can effectively eliminate a driving day even though you have not driven a mile. Sleeper-berth status during long detention (qualifying for §395.1(g) split) is the only way to pause the 14-hour clock while at a customer.
How do I actually collect detention pay from brokers?
Workflow: (1) timestamp arrival via app or photo before checking in, (2) get gate or guard signature on BOL with arrival time, (3) document delay reasons in writing if disputed, (4) note departure time on signed BOL, (5) submit detention claim within 24 hours via broker portal or email with rate con + BOL + arrival/departure proof, (6) follow up at 7, 14, and 30 days, (7) if denied, escalate to broker management or invoke factoring company collection if claim was assigned. Factoring companies (Apex, RTS, OTR) often handle detention recovery for 1-3% additional fee.
Are there laws requiring shippers to pay detention?
No federal law mandates detention payment. The MAP-21 act (PL 112-141 §32301) directed FMCSA to study detention impact, leading to the 2023 driver detention report. The 2023 Truck Safety Act proposals would impose payment requirements but have not become law as of 2024. Currently detention is purely contract-based — what is in the broker-carrier rate con is what you can enforce.
What is the difference between detention, lay-over, and TONU?
Detention: extra time at a single shipper or receiver beyond free time, billed hourly. Lay-over: stuck for >10 hours waiting on next load assignment, billed daily ($150-$400). TONU (truck ordered not used): you arrived for a load but the load cancelled or was double-covered, paid as a flat fee ($150-$300) covering deadhead and lost slot. Each is a separate line item in a properly structured rate confirmation.