Trailer Restraint & Dock Lock Repair in Boise & Nampa, ID
For trailer restraint and dock lock repair in Boise, Nampa and the Treasure Valley, call (385) 325-7138 about a vehicle restraint that won't engage, won't release, or shows the wrong light. Tell us the facility location, which door, and whether a trailer is at the dock.
Call to describe the problem—if the door is stuck open or the dock is down, say so first.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
Facts checked: September 23, 2026.
This page is about the restraint mounted at your dock. It is not about repairing the trailer itself.
What kind of restraint is it?
A trailer restraint, also called a vehicle restraint, truck restraint or dock lock, holds a trailer against the dock while it's loaded. Most hook the steel bar under the back of the trailer. Others block a wheel. The lights and interlocks around it report what state the system is in. They don't prove the trailer is safe.
| Type | How it holds the trailer | What to mention |
|---|---|---|
| Hook-style restraint | A hook rises from the dock face and grabs the rear-impact bar under the trailer | That the hook won't rise, grab or lower |
| Wheel-based restraint | A barrier or arm locks in front of a trailer wheel | That the barrier won't set or release |
| Manual restraint | A crew member sets it by hand | What won't move |
| Communication lights | Red and green lights inside and outside the bay | Which color is showing, inside and out |
| Interlock | Links the restraint to the door or leveler so they only run in the right order | What won't run |
Vehicle restraining devices have their own national standard, ANSI MH30.3 (ANSI listing). We name it for identification only.
Nameplates. Rite-Hite (Dok-Lok), Kelley and Blue Giant all make vehicle restraints (Kelley, Blue Giant). These are identification examples only.
What is the restraint doing?
Say what you see, which door, and whether a trailer is at the dock. The company works out why.
| What you see | What a qualified company may inspect | Why it matters | What to say |
|---|---|---|---|
| Restraint won't engage the trailer | Hook, motor or hydraulics, sensors, trailer bar height | The trailer isn't held | Which door, and that it won't engage |
| Restraint won't release; trailer stuck at the dock | Hook, controls, power | The driver can't leave | That a trailer is stuck, say it first |
| Lights stay red or green no matter what | Sensors, light package, controls | The crew and driver get the wrong signal | Which lights, inside and outside |
| Alarm keeps sounding | Sensors, controls | Something in the system is out of step | When it sounds |
| Door or leveler won't run | Interlock | The interlock may be doing its job, or may have failed | What won't run |
| Bent or damaged after a trailer pulled out | Hook, housing, mounting | A damaged restraint may not hold | That it was hit and is out of use |
| Restraint can't reach the trailer's bar | Trailer type, bar height, restraint type | Some trailers don't fit some restraints | The trailer type, if known |
Can we keep loading if the restraint isn't working?
Follow your facility's trailer-securing procedure and take that door out of use if your process says so. Don't bypass the restraint or the interlock to keep working. This page has no override steps.
Here's what the OSHA text says:
- Before a forklift boards: "The brakes of highway trucks shall be set and wheel chocks placed under the rear wheels to prevent the trucks from rolling while they are boarded with powered industrial trucks" (29 CFR 1910.178(k)(1)).
- During loading: "Brakes shall be set and wheel blocks shall be in place to prevent movement of trucks, trailers, or railroad cars while loading or unloading" (1910.178(m)(7)).
There's a wrinkle for commercial trucks. In a 2011 letter, OSHA said federal motor carrier rules preempt its chocking requirements for commercial motor vehicles. OSHA can still require employers to protect workers, such as forklift operators, from trailer movement. It said forklift operators should be trained not to drive onto a trailer at the dock "unless the trailer is properly secured or restricted from movement prior to boarding" (OSHA interpretation, March 7, 2011). How that applies at your dock is a question for your safety lead.
More background: vehicle restraints vs. wheel chocks.
Trailer stuck at the dock? Say that first.
What we take calls about — and what we don't
In scope: dock-mounted trailer restraints, vehicle restraints and dock locks, their communication lights, controls and interlocks, at commercial loading docks.
Not in scope:
| Not in scope | Call this kind of company instead |
|---|---|
| Trailer repair, including the trailer's rear bar | A trailer repair shop |
| Truck mechanical and brake work | A truck repair shop |
| Hitches and towing equipment | A hitch or trailer shop |
| Boat docks | A marine contractor |
| Parts-only orders | A parts supplier |
Wheel chocks and dock lights on their own go to dock equipment.
What happens after you call?
You describe the restraint, the lights and the trailer situation. Your call may be shared with an independent commercial dock-and-door repair company. The independent company that takes the work confirms the facility address, the scope, availability, price and scheduling, and its own contract, work and warranty terms.
Example of what to say — not a script: "The dock lock at door 9 shows red and won't grab the trailer at our Nampa facility."
- Call (385) 325-7138 with the door, the lights and whether a trailer is there.
- Your call may be shared with an independent commercial dock-and-door repair company.
- That company confirms address, scope, availability, price and scheduling.
If you reach voicemail, leave the facility address, the door or dock number if known, what's wrong, and a callback number.
Useful, not required: the door number, the light colors inside and outside, whether a trailer is stuck, the trailer type if you know it, and a brand you can read from a safe spot. You can call without any of it. See how Uptime works and about Uptime.
What affects the cost of dock lock repair?
We can't price a restraint repair from a web page. The price depends on the restraint type, the fault, parts, and access. Here's what to ask before you authorize work.
| Cost factor | Why it matters | What to ask |
|---|---|---|
| Diagnostic or trip fee | Covers the visit | "Does it go toward the repair?" |
| Restraint type | Hook, wheel and manual units differ | "What type do we have?" |
| Motor, hydraulic or mechanical parts | Main drive parts | "Which part, and is it in stock?" |
| Sensors and lights | Signal and light packages | "Is it the sensor or the light?" |
| Interlock and control wiring | Electrical work and a possible permit | "Is there electrical work, and who buys the permit?" |
| Impact damage | Housing or mounting repair | "Can it be repaired, or does it need replacing?" |
| Access | A trailer at the dock, busy shifts | "Can you work around our schedule?" |
Repair or replace a trailer restraint?
Replacement comes up when the restraint is badly damaged, parts aren't available, it keeps failing, or it doesn't fit the trailers you get now. Ask the company which reason applies.
Ask these on the call.
Idaho checks for restraint work
Facts checked: September 23, 2026. The provider and the issuing office decide what applies to your job.
- Federal OSHA applies. Idaho has no state plan for private employers (OSHA State Plans).
- Registration. Idaho contractors register with the state. Check the number on DOPL's search.
- Electrical. Restraints, lights and interlocks are wired. Ask whether the job includes electrical work, who holds the Idaho electrical license, and who buys the permit. Meridian and Nampa issue their own electrical permits, and Caldwell accepts applications through its Building Safety portal. The state handles them in unincorporated Canyon County (Meridian, Nampa, Caldwell, Canyon County).
Where in the Treasure Valley?
We take calls about loading docks in Boise, Nampa, Meridian, Caldwell and across Ada, Canyon, Gem, Boise and Owyhee counties. The independent company confirms the address. Full service area. All Boise & Nampa dock and door services.
Dock lock questions
Why won't our dock lock release the trailer? It could be the hook, the controls or the power. Only a technician can tell on site. Say first that a trailer is stuck at the dock, and don't try to force it.
Does OSHA require a vehicle restraint? The OSHA sections quoted above talk about brakes and wheel chocks or blocks. For commercial trucks, OSHA's 2011 letter says motor carrier rules take over chocking, while employers still protect workers from trailer movement. Ask your safety lead what your dock needs.
What do the red and green dock lights mean? They're status signals for the driver and the dock crew. Your system's own labels tell you what each color means at your dock. If they're stuck or don't match, report it.
Can we bypass the interlock to keep loading? This page has no bypass steps. Interlocks are there on purpose. Follow your facility's procedure and report the fault.
Is trailer restraint repair the same as trailer repair? No. This is the equipment on your dock, not the trailer.
For the national view of dock equipment, see loading dock repair. Related: dock levelers.
Call about the dock lock
Call (385) 325-7138 and say which door, what the lights show, and whether a trailer is stuck.
Independent service-request website. Calls may be shared with an independent commercial dock-and-door repair company. That provider confirms availability, scope, pricing, and service terms.
Uptime Dock & Door is an independent commercial service-request website for loading-dock and commercial door repair. Keep Every Bay Moving.
Sources
Original source review: September 23, 2026. Caldwell Building Safety rechecked September 24, 2026.