Dispatch Lingo for New Truckers
When your dispatcher starts talking about deadheading to a drop-and-hook with detention pay on a hot load, you need to know what every word means. This guide breaks down the essential dispatch terms every new trucker must learn, with real-world context and examples.
Ahmad Qazi
Founder & CEO, O Trucking LLC
Fact-Checked by O Trucking Editorial Team
5+ years training new drivers on dispatch communication and freight terminology
Written by Ahmad Qazi, founder of O Trucking LLC, drawing on 9+ years dispatching for owner-operators. Learn more about us.
O TruckingDispatch Lingo for New Truckers: Terms You Need to Know (2026)
Key Takeaways
- Deadhead means empty miles driven to reach a pickup — it burns fuel with zero revenue, so always factor it into a load's true rate per mile.
- Drop-and-hook lets you swap to a preloaded trailer and roll immediately, while a live load means you wait at the dock to be loaded or unloaded.
- A hot load is urgent, time-sensitive freight that usually pays a premium above standard rates.
- Detention pays for excessive waiting at a shipper or receiver; layover pays for forced downtime between loads — they are not the same.
- TONU (Truck Order Not Used) is a fee owed when you position for a load that is then cancelled through no fault of your own — get it agreed in writing.
- A preplan is your next load assigned before you finish the current one, keeping downtime and empty miles to a minimum.
Load Type Terms
These terms describe the type of load or how it is handled at pickup and delivery:
| Term | Meaning | Example |
|---|---|---|
| Hot load | Urgent, time-sensitive freight with premium pay | “Got a hot load to Chicago — needs to be there by 6 AM” |
| Live load | You wait while trailer is loaded/unloaded | “It's a live load — expect 2-3 hours at the dock” |
| Drop-and-hook | Drop trailer, hook to a preloaded one | “Drop and hook at door 14, your trailer is ready” |
| Relay | Two drivers each haul part of the route | “Relay at the Nashville terminal — driver B takes it from there” |
| Repower | New driver assigned to a load mid-route | “Driver broke down — we need to repower this load ASAP” |
| Turn / Turnaround | Short round-trip load, usually same day | “Got a quick turn — Dallas to Austin and back” |
Miles and Money Terms
Understanding how dispatchers talk about miles and money is critical for evaluating whether a load is worth taking:
| Term | Meaning | Why It Matters |
|---|---|---|
| Deadhead | Empty miles to reach pickup | Costs fuel with zero revenue |
| Loaded miles | Miles driven with freight on board | Revenue-generating miles |
| Empty miles | All miles driven without a load | Includes deadhead and bobtail |
| Detention | Pay for waiting at shipper/receiver | Usually kicks in after 1-2 hours |
| Layover | Pay for waiting between loads | Compensates for forced downtime |
| Per diem | Daily allowance for meals/incidentals | Tax-free portion of compensation |
Always Calculate Total Miles, Not Just Loaded Miles
Planning and Scheduling Terms
These terms relate to how dispatchers plan your schedule and manage load assignments:
Preplan — Your next load is assigned before you finish the current one. This is ideal because it minimizes downtime and keeps you moving. “You're preplanned for a pickup in Memphis tomorrow at 0700.”
Sitting / Parked — Waiting for a load assignment with no freight scheduled. This costs you money and is a sign of either a slow freight market or dispatch inefficiency.
Home time — Scheduled time off at your home base. How home time is managed varies by carrier — some guarantee weekly home time, others every 2-3 weeks for OTR drivers.
34-hour restart — The HOS provision that resets your 60/70-hour driving clock after 34 consecutive hours off duty. Dispatchers plan around this to maximize your available hours. See the 34-hour restart rules.
Learn These Terms Before Your First Day
Problem and Exception Terms
These terms come up when things do not go as planned — which happens regularly in trucking:
TONU (Truck Order Not Used) — You drove to a pickup location but the load was cancelled. You are typically entitled to a fee ($150-$350) for the wasted trip. See our TONU rates guide.
Refused load — The receiver refuses to accept the freight, often due to damage, wrong product, or late delivery. Dispatch must arrange return or alternate delivery.
Lumper — A third-party worker who loads or unloads your trailer for a fee. Lumper fees are common at grocery and retail warehouses and should be reimbursed by the broker or carrier. See our guide on detention and lumper fees.
Bobtail — Driving the tractor with no trailer attached at all (versus deadhead, which is pulling an empty trailer). You will hear “bobtail back to the yard” when dispatch wants you to drop the trailer and return without one.
Paperwork & Communication Abbreviations
Dispatchers rarely spell things out. These abbreviations show up constantly in messages, on rate confirmations, and over the radio — knowing them keeps you from guessing:
| Abbreviation | Stands For | What It Means |
|---|---|---|
| BOL | Bill of Lading | The legal contract and receipt for the freight you are hauling |
| POD | Proof of Delivery | Signed paperwork confirming the load was delivered; required to get paid |
| RC / Ratecon | Rate Confirmation | Document stating the agreed pay and load details before you roll |
| ETA | Estimated Time of Arrival | When you expect to reach the pickup or delivery; dispatch asks for it often |
| OS&D | Over, Short & Damaged | A discrepancy report when freight count or condition is wrong at delivery |
| FSC | Fuel Surcharge | A per-mile fuel adjustment added on top of the line-haul rate |
| HOS | Hours of Service | The FMCSA driving/duty limits dispatch must plan your loads around |
| ELD | Electronic Logging Device | The device that records your hours; dispatch sees your available time on it |
| PTA | Projected Time of Availability | When you will be empty and ready for the next load |
| PU / DEL | Pickup / Delivery | Shorthand for the load's origin and destination stops |
Two of these deserve a deeper look: the rate confirmation is where your pay is locked in, and hours-of-service rules dictate how dispatch can legally schedule you. If you also run a CB, keep a 10-codes chart handy for radio shorthand.
Common Mistakes New Truckers Make With These Terms
- Judging a load by loaded miles only. Ignoring deadhead miles makes a load look better than it is — always divide total pay by loaded plus empty miles.
- Leaving a cancelled pickup without a TONU in writing. If you roll away before the fee is agreed, you may never get paid for the wasted trip.
- Confusing detention with layover. They are billed differently; claim the right one and make sure both are spelled out in your rate confirmation or pay package.
- Accepting a lumper fee without keeping the receipt. Reimbursement usually requires proof, so save every lumper receipt for your settlement.
- Guessing instead of asking. If a dispatcher uses a term you do not know, ask — a wrong assumption about a pickup window or load type can cost you a service failure.
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Dispatch Lingo FAQ
Common questions about trucking dispatch terminology
What does deadhead mean in trucking dispatch?
Deadhead means driving without a load — your trailer is empty or you are bobtailing (no trailer at all). Dispatchers use the term to describe empty miles between your current location and a load's pickup point. For example, 'There's 150 miles of deadhead on this load' means you drive 150 miles empty before picking up the freight. Deadhead miles cost fuel without generating revenue, so minimizing them is a key dispatch priority.
What is the difference between a live load and drop-and-hook?
A live load means you wait at the dock while your trailer is loaded or unloaded — you stay with the truck the entire time. Drop-and-hook (or 'drop and pick') means you drop your loaded or empty trailer and immediately hook to a preloaded trailer that is waiting for you. Drop-and-hook is faster and more efficient because you do not wait. Experienced drivers prefer drop-and-hook because it maximizes driving time and revenue.
What is a hot load in dispatch terms?
A hot load is time-sensitive freight that needs to be delivered as quickly as possible, often because of a missed pickup, production deadline, or supply chain emergency. Hot loads typically pay a premium — 20-50% above standard rates — because the shipper or broker needs the freight moved urgently. Your dispatcher may offer you a hot load when speed is the priority and the pay reflects the urgency.
What does preplan mean in trucking?
Preplan means your dispatcher has assigned your next load before you finish your current delivery. For example, while you are driving to deliver in Dallas, dispatch preplans a pickup in Fort Worth for the next morning. Preplanning keeps you moving efficiently with minimal downtime between loads. A good dispatcher preplans whenever possible so you always know what is coming next.
What does TONU mean in trucking dispatch?
TONU stands for 'Truck Order Not Used.' It applies when you are dispatched to a pickup, arrive ready to load, and the load is then cancelled or no longer available through no fault of your own. Because you spent time and fuel positioning for freight that disappeared, brokers and carriers typically pay a TONU fee — commonly in the $150 to $350 range, though the exact amount is negotiated per load and not fixed by any regulation. Get the TONU agreed in writing before you leave the pickup.
What is the difference between deadhead and bobtail?
Both describe driving without revenue freight, but they are not the same. Deadhead means you are pulling an empty trailer — usually to reposition for your next pickup. Bobtail means you are driving the tractor alone with no trailer attached at all. Dispatchers track both as empty (non-revenue) miles, but bobtailing changes how the truck handles and brakes, so newer drivers should take extra care, especially on wet roads.
What is the difference between layover and detention pay?
Detention pay compensates you for excessive time waiting to be loaded or unloaded at a shipper or receiver, usually starting after a free window of one to two hours. Layover pay compensates you for being stuck between loads — for example, when your next assignment does not pick up until the following day and you are parked overnight. Detention is tied to a specific stop's delay; layover is tied to downtime between loads. Both should be spelled out in your pay package or rate confirmation.
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