How to Assign Dock Doors Without Software
To assign dock doors without software, agree on a few fixed rules ahead of time and keep one door schedule that everyone writes on. The rules cover which doors take which trailers, who goes first when two trailers want the same door, and how long a slot holds a door. The priority order is simple: give live loads a door before drops, keep one door free as a buffer, and never send a trailer to a door that hasn't passed its ready check.
Most door problems aren't really scheduling problems. They're decisions made on the spot by whoever is at the gate. Two guards on two shifts will fill the same eight doors in two different ways, and the dock pays for it. This guide covers the rules to write down, a simple schedule grid you can print or open in a spreadsheet, and the routine for each arriving truck.
01Why the order you assign doors in matters
Every minute a driver waits for a door costs somebody. Under federal hours-of-service rules, time a driver spends waiting at a shipper's or receiver's facility is on-duty time. So is time attending a truck while it's loaded or unloaded (49 CFR 395.2, "On-duty time"). That time comes out of the driver's day, and it's what carriers bill as detention.
It adds up. In an FMCSA-sponsored study cited in the Federal Register, drivers were detained at about 10 percent of stops. On average, those stops ran 1.4 hours beyond the commonly accepted two-hour loading and unloading window (84 FR 26933, June 10, 2019). The U.S. DOT Inspector General estimated that a 15-minute increase in average dwell time raises the expected crash rate by 6.2 percent (DOT OIG ST2018019, 2018). Door assignment is where you can shorten that wait without buying anything.
02The five door rules to write down
| Rule | What to decide |
|---|---|
| 1. Door zones | Which doors take inbound, which outbound, which have power for reefers, and which have a leveler that fits low trailers. Write it on the wall next to the board. A trailer can only go to a door in its zone. |
| 2. Priority order | When two trailers want the same door, the one with a driver waiting goes first. A good default: live with an appointment, then live walk-in, then drop, then empty pulls. |
| 3. Slot length | How long each type of load holds a door, taken from your own gate log times, not a guess. Add a short turnover gap between slots. |
| 4. Buffer door | Keep one door out of the schedule for early arrivals, a late live load, or a blocked door. If the buffer is always full, the schedule is overbooked. |
| 5. Ready check | A door isn't free until the last trailer has gone and the next one can be worked safely. See the checklist below. |
Write the rules down and put a name next to them. Rules that live in one supervisor's head change every shift change.
03The door schedule template
Put doors across the top, time down the side, and give each slot one trailer. This is the plan for the day. The dock door status board shows what is happening at each door right now. You need both: the schedule says who should be at door 4 at 10:00, and the board says who is.
| Time | Door 1 (in) | Door 2 (in) | Door 3 (in, reefer) | Door 4 (out) | Door 5 (out) | Door 6 (buffer) |
|---|---|---|---|---|---|---|
| 06:00 | SWFT 53142 · LIVE | JBHU 28871 · DROP | Outbound 118 | — | ||
| 07:00 | ↓ | Reefer appt 0715 | ↓ | Outbound 119 | — | |
| 08:00 | Walk-in · LIVE | ↓ | ↓ | — | ||
| 09:00 | — |
The CSV template has 12 doors and half-hour rows from 05:00 to 22:00. Open it in Excel or Google Sheets, rename the door columns to match your zones, and print one page per day. Write "↓" in the rows a load continues into, so nobody books a slot that's still taken.
04The assignment routine for each truck
- Check the truck in first. Record time in, SCAC, trailer number and seal at the gate. The gate check-in guide covers the fields.
- Match it to the schedule. If it has a slot and the door is ready, send it there. If it's early or late, use the priority order. Don't bump a trailer that's already at a door.
- Pick a door in the right zone. Reefers go to reefer doors, and outbound goes to outbound doors. If no door in the zone is ready, use the buffer door or send the trailer to a yard spot. Don't use a door from the wrong zone.
- Write it down before the truck moves. Put the trailer number in the slot on the schedule, and the door in the gate log. If you tell the driver a door and never write it down, the trailer gets lost.
- Update the board when the trailer is at the door. Mark the door LOADING with the trailer number. When the work is done, mark it LOADED, and change it back to EMPTY only after the trailer leaves and the ready check passes.
- Record time out. The next slot for that door starts from the actual departure, not the planned one.
05Door ready checklist
Run through this before a door counts as free for the next trailer:
- The last trailer has left and time out is logged.
- The next trailer's brakes are set, and wheel chocks or a trailer restraint are in place before any forklift goes aboard. OSHA requires chocks under the rear wheels of highway trucks while powered industrial trucks board them (29 CFR 1910.178(k)(1)).
- The trailer floor has been checked for breaks and weakness before a forklift drives on. Put a fixed jack under a trailer that isn't coupled to a tractor if it needs one (29 CFR 1910.178(m)(7)).
- The leveler and dock lights work. If they don't, the door is BLOCKED, with the reason written on the board.
- The door on the schedule matches the door on the board.
06When paper stops working
A schedule grid and a whiteboard work fine for one building, one shift, and one person who owns the board. The warning signs are predictable:
- Two people assign doors and the board doesn't match the schedule.
- The gate is far from the board, so assignments get made by radio and written down later.
- A carrier disputes a detention bill and nobody can show which door a trailer was at, or when.
If appointment chaos is the main problem, look at dock scheduling software. If the problem is not knowing what's in the yard and at each door, a YMS fits better. The YMS vs dock scheduling comparison explains the difference.
Start with the gate, on a phone.
Vantage is a yard app for warehouses. The guard logs the trailer at the gate on a phone, and every check-in gets a timestamp (and a photo whenever the camera is used), which gives your door schedule real arrival times. No hardware to install. The Free plan covers 1 user, 1 yard, and 100 gate events a month, with no card required. The live yard map and the door board are included on the Free plan too.
Start free → Or keep the paper schedule. The rules work either way.FAQ
How do you decide which dock door a trailer goes to?
Use fixed rules decided in advance, not the guard's judgment in the moment. Match the trailer to the doors that can take it (reefer, inbound or outbound, any special equipment). Then pick by priority: live loads with an appointment first, then live loads without one, then drops, then empty pulls. Keep one door free as a buffer.
Should live loads or drop trailers get a door first?
Live loads. A driver waiting for a live load or unload is on duty under federal hours-of-service rules, and that wait is what turns into detention. A dropped trailer can wait in the yard without a driver attached.
How long should a dock appointment slot be?
As long as that type of load actually takes at your dock, measured from your own gate log, plus a short turnover gap. Start with the median time for each load type (floor-loaded, palletized, live, drop) and adjust after a few weeks of real times.
Is a whiteboard enough for dock door scheduling?
For one building, one shift, and one person who owns the board, often yes. It breaks when more than one person assigns doors, when the gate is far from the board, or when you need to show later which trailer was at which door and when.