What Does Detention Actually Pay?

2 hours free, then $50 an hour. That is what the rate confirmation says, and it is not what detention costs you. The fee is the smaller number by a wide margin. The real bill is hours off a clock you cannot get back, and it never appears on an invoice.

The clock detention actually spends

Sitting at a dock is on-duty time. 49 CFR 395.2 puts it in writing. On-duty time includes attending a vehicle being loaded or unloaded, remaining in readiness to operate, and giving or receiving receipts. Waiting in a driver's lounge for a door counts. So does sitting in the yard with the engine off.

That matters because of 395.3(a)(2). A driver may not drive after 14 consecutive hours following 10 consecutive hours off duty. 14 consecutive. It is a wall clock, not a stopwatch, and it does not stop for the dock, for fuel, or for a shipper who forgot you were coming. The 11-hour driving limit in 395.3(a)(3)(i) pauses the moment you park. The 14 does not.

So a driver can finish a detained day with 4 hours left on the 11 and no legal way to spend a minute of them. Those hours are not banked. They are gone at the next 10-hour break.

One detained morning, worked in dollars

A driver comes on duty at 06:00 after 10 off, so his window closes at 20:00. He runs 2 hours to an 08:00 appointment and gets out of the gate at 14:00. 6 hours at the dock. The rate con reads 2 hours free, $50 an hour after that, capped at 4 hours. Detention pays $200.

Now count what it took. Loaded on time he rolls at 10:00 with 10 hours of window left and 9 driving hours still on the 11, so he drives 9. Detained, he rolls at 14:00 with 6 hours of window left, so he drives 6. Three driving hours lost.

At 55 mph that is 165 miles. At $2.40 a mile it is $396 of linehaul that did not happen. Detention paid $200. He finished the day down about $200 on paperwork that says the shipper made him whole.

The version that eats a whole day

Worse, the delivery no longer fits inside the window. The load takes 2 working days instead of 1. On a $1,600 load, one day is $1,600 a day. Two days with $200 of detention added is $900 a day. Profit per working day fell about 44%, and the detention line still reads paid.

Profit per working day is the number that catches this. Rate per mile never will. That math is at nrbcarriergroup.com/learn/is-2-50-a-mile-a-good-rate, and the cost side of it is at nrbcarriergroup.com/learn/owner-operator-cost-per-mile-2026.

Where the 2 free hours came from

No regulation sets it. There is no federal free time and no federal detention rate. DOT's Office of Inspector General, in report ST2018019 of January 31, 2018, found that 11 of 12 industry stakeholders it interviewed described an informal consensus that 2 hours is reasonable for loading or unloading. Informal consensus. It lives in contracts, not in the CFR, which means it is negotiable and most small carriers never once try.

What the data says, and who it left out

The same report found accurate industrywide detention data does not exist. The 2014 FMCSA study everyone still quotes drew on 29 medium and large carriers and 2 small ones, no traditional owner-operators, over 7 months of 2013. OIG noted that carriers with 3 or fewer trucks are the large majority of motor carriers. The numbers the industry argues over come from a sample that does not contain you.

OIG said its own estimates may understate the loss, because small carriers are detained more often and compensated less often than big ones. In a 2014 OOIDA survey of members, mostly small carriers, 37% reported no compensation at all for detention. Six of the 8 carriers and owner-operators OIG interviewed said shippers sometimes refuse detention that was properly billed, over things like a truck arriving 1 minute after its appointment. FMCSA is still measuring the problem at docket FMCSA-2023-0172, 88 FR 58060, published August 24, 2023. That was almost 3 years ago.

The safety number that never reaches an invoice

OIG estimated that a 15-minute increase in average dwell time raises the average expected crash rate by 6.2%. Per driver, detention was associated with $1,281 to $1,534 less income a year, a cut of 3.0 to 3.6 percent. Across the truckload sector it estimated $1.1 billion to $1.3 billion in lost driver earnings and $250.6 million to $302.9 million in lost carrier net income a year. Hours waiting are hours not driving.

The terms that decide whether you collect

• How much free time, and whether the clock starts at the appointment time or at check-in. Arriving early rarely helps. Arriving late has voided the whole term.
• The hourly rate, whether it accrues in full hours or partial ones, and the cap. $50 an hour capped at 3 hours is a $150 term, not a $50 one.
• The notice requirement. Most brokers want a call before free time runs out. Miss it and the clock never started.
• In and out times signed on the bill of lading, backed by your own timestamped photos at the gate.
• Whether detention accrues overnight and on weekends, whether it applies at the receiver too, and what the TONU and layover terms say.

Get all of it on the rate confirmation before the truck moves. A detention policy agreed to on the phone is not a detention policy.

The move that is legal, and the one that is not

The sleeper berth split is the real tool. Under 395.1(g)(1)(ii) a driver takes one rest period of at least 7 consecutive hours in the sleeper berth and another of at least 2, totaling at least 10. Under (g)(1)(iii)(B) the 14-hour window does not include qualifying rest periods. A driver who knows he is walking into a bad appointment can build the day around it and keep his window. It is his call and his logbook, never something a dispatcher bakes in without saying so.

What does not work is the adverse driving conditions exception. 395.1(b)(1) gives 2 additional hours, and 395.2 limits the trigger to snow, ice, sleet, fog, other adverse weather, or unusual road or traffic conditions that were not known and could not reasonably have been known before the duty day began. A slow dock is none of those. Logging detention as adverse conditions is a false log, and that is a far bigger problem than a lost afternoon.

What to do about it this week

• Pull your last 20 stops and write down gate in and gate out. You cannot negotiate a number you do not have.
• Rank shippers and receivers by average dwell, not by who was friendly at the window.
• Bill every hour you are owed, every time, including the ones you expect to lose. Carriers who bill collect some of it. Carriers who do not collect none.
• Price the repeat offenders. A facility that eats 4 hours has to pay more per mile than one that loads in 45 minutes.
• Get detention terms in writing before dispatch, not after the wait.

Run a real load at nrbcarriergroup.com/load-check. Put in the dwell you expect at that shipper and it works out what the day leaves you, not what the rate per mile suggests. Free, no signup, numbers stay in your browser. If you would rather have gate times captured at every stop than rebuilt from memory each quarter, that is what our app does. The basics are free.

Sources: 49 CFR 395.2 (on-duty time, adverse driving conditions), 395.3(a)(2) and (a)(3)(i) (the 14-hour window, the 11-hour driving limit), 395.1(g)(1)(ii) and (g)(1)(iii)(B) (the sleeper berth split), and 395.1(b)(1). Detention figures are from DOT Office of Inspector General report ST2018019, issued January 31, 2018 under the FAST Act of 2015. The pending FMCSA study is docket FMCSA-2023-0172, 88 FR 58060, August 24, 2023. The dollar examples use a stated $50 per hour rate, a 4-hour cap, 55 mph and $2.40 per mile. Your rate confirmation and your own cost per mile are the only numbers that decide your loads. Arithmetic and regulation, not legal advice.