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NSC Standard 11: the vehicle maintenance program every carrier has to run

Last updated: Written by Blake Cowan, NCSO

Part B gets the decal and the attention. Part A is the maintenance program you have to write, run and record all year, and it is the half that fails audits. What the standard requires, what to keep, and how long to keep it.

The short answer

National Safety Code Standard 11 is the Canadian standard for commercial vehicle maintenance and periodic inspection. Part A is the part most carriers get caught on: your standing duty to systematically inspect, repair and maintain every vehicle under your control, run a scheduled maintenance program, and keep records that prove all of it. Part B is the periodic inspection a licensed facility carries out, which you know as the CVIP.

Most carriers can point at a stack of CVIP certificates. Far fewer can hand an auditor a written maintenance program and a clean per-vehicle record going back five years, and that is the gap this page is about.

What is National Safety Code Standard 11?

Standard 11 is one of the National Safety Code standards the provinces use to keep commercial vehicle rules consistent across Canada. The CCMTA publishes it as Commercial Vehicle Maintenance and Periodic Inspection, revised January 2020, and the provinces adopt it into their own legislation.

It sits alongside the standards you already deal with: Standard 13 for daily trip inspections, Standard 15 for facility audits, Standard 14 for safety ratings, and Standard 7 for carrier and driver profiles. Standard 11 is the one that governs the condition of the equipment itself.

What is the difference between Part A and Part B?

Part A is your program, Part B is the inspection. Part A is the ongoing obligation you carry every day of the year as a carrier, and Part B is the point-in-time inspection a licensed technician signs off on.

Part B is the one with a certificate and a decal on the unit, which is why it gets the attention. It is the CVIP inspection in Alberta and Saskatchewan, and the periodic motor vehicle inspection elsewhere. Part A has no decal, nothing to hang in the cab, and no obvious moment where somebody checks it. That is exactly why it is the half carriers forget until an auditor asks.

Who has to have a maintenance program?

Every National Safety Code carrier. The Government of Alberta states it plainly: all NSC carriers are required by law to write and implement safety and maintenance programs, and other provinces impose the same duty through their own regulations.

The threshold follows the usual NSC definition, commercial vehicles over a registered gross vehicle weight of 4,500 kg. If you hold a Safety Fitness Certificate, this applies to you, whether you run forty units or three.

What does the maintenance program actually have to do?

The duty is written broadly and deliberately: a carrier shall systematically inspect, repair and maintain all commercial vehicles subject to its control, or cause that to be done. Alongside it sits the requirement to establish a regular preventative maintenance program for those vehicles.

The word doing the work there is systematically. Fixing trucks when they break is not a maintenance program. A program means the work is scheduled in advance, it happens whether or not anything is obviously wrong, and there is a record showing it happened on time.

Here is what it looks like when that fails. A driver hauling a pup never checked the oil level in the hubs. He pulled up to a stop sign, started forward again, and the set of duals rolled off and into the ditch. At a stop sign, that is a tow truck and a bad afternoon. At highway speed, it is a loose set of duals crossing the centre line into somebody's windshield, people get hurt or killed, and it is the carrier that answers for it.

Wheel offs keep happening for the same reason: the oil level in the hub got low and nobody looked. The driver has to check it, and it is a trip inspection item. Worth knowing that the seal leak which drains that hub is classified differently depending on where you run: in Ontario it is a minor defect that gets written down and driven on, where the national schedule makes it major and stops the truck. But the second layer is the one a maintenance program exists for. Your mechanics are the professionals, and a scheduled visual on the units every few days finds the hub that is weeping before a walk around ever finds it dry. One layer is a habit. Two layers is a system, and the system is what Part A is asking you for.

What maintenance records do you have to keep?

Records of all inspection and maintenance activity, kept per vehicle rather than in one pile for the fleet. Alberta's guidance to carriers is to use one form to record all maintenance and repairs for each vehicle, attaching the invoice each time a unit is serviced.

In practice, a defensible vehicle file holds this:

Comparison table.
What to keepWhy an auditor wants it
Unit identification, make, serial or VIN, and registered weightTies every record to a specific vehicle rather than to your fleet in general
The scheduled maintenance plan for that unitShows the program exists and says what should happen and when
Dated records of scheduled work performedShows the plan was actually followed, not just written
Repair records and shop invoicesIndependent evidence, with a third party's date on it
Trip inspection reports that reported a defectCloses the loop between a driver's report and the repair
Records of defect repairs before the unit ran againShows a major defect stopped the vehicle rather than being noted and ignored
Periodic inspection certificates, the CVIPTies Part A and Part B together in one file

Scroll the table sideways to see every column. The first column stays in place.

How long do you have to keep them?

Longer than most carriers assume, and longer than trip inspection reports alone. Alberta requires trip inspection reports be kept for at least six months, but any report that requires additional maintenance work is retained with the maintenance documents for the current year plus an additional four years.

Read that twice, because it is where good carriers get caught. The moment a driver writes up a defect, that piece of paper stops being a six month document and becomes part of a five year maintenance record. Purge on the six month rule and you throw away the evidence an auditor is going to ask for.

How often does scheduled maintenance have to happen?

The standard does not hand you an interval. It requires the program to be systematic, and leaves the schedule to you, which means it has to be defensible rather than arbitrary.

Start where Alberta tells carriers to start, with the vehicle manufacturer's recommendations, and build the schedule from there. A common shape is an inspection due at 30,000 km or three months, whichever comes first, with oil changes and scheduled servicing hung off the same clock, and the annual or semi annual CVIP as a separate line. What matters is that you wrote the interval down, you can say why, and the records show you hit it.

How does this affect your Safety Fitness Certificate?

Directly. Maintenance findings feed your safety rating and your carrier profile, and those are what your Safety Fitness Certificate rests on, so a maintenance program that exists only in principle turns into a regulatory problem rather than a paperwork one.

It is also the part your customers see. A prequalification reviewer on ISN, Avetta or ComplyWorks can pull a carrier profile, and a poor safety rating is a harder thing to explain to a client than a single expired decal.

What does a facility audit look for?

An auditor works from your written program to your records and checks that the two agree. The question is never really "are your trucks in good shape", it is "can you show me the system that keeps them that way, and the proof it ran".

That is why a carrier with genuinely well maintained equipment can still fail this part of an audit. The trucks are fine. The written program was never finished, the schedule lives in a shop foreman's head, and the invoices are in a filing cabinet organised by vendor instead of by unit. The equipment passes and the program does not.

How do you keep a maintenance program running across a fleet?

Put the schedule and the records on the unit, not in somebody's memory, and make the next due date visible before it arrives. A program falls apart in the same place a CVIP does, at the point where one unit out of forty slips past its date and nobody notices until it matters.

That is the job Cor Pathway 360 does. Scheduled maintenance, defect reports from trip inspections, service history and certification expiry all attach to the piece of equipment itself, so the vehicle file an auditor asks for is the same file your shop works from every day. A defect a driver writes up becomes a maintenance record without anybody retyping it, and the five year retention takes care of itself because nothing was ever kept on paper in the first place.

If your maintenance program is a binder somebody started and a spreadsheet nobody owns, that is the gap an audit finds, and writing it properly is the work we do for carriers.

Questions people actually ask

What is National Safety Code Standard 11?
NSC Standard 11 is the Canadian standard titled Commercial Vehicle Maintenance and Periodic Inspection. It comes in two parts: Part A sets the maintenance program a carrier has to run on its own vehicles, and Part B sets the periodic inspection standard that a licensed facility inspects to, which most provinces know as the CVIP.
What is the difference between NSC Standard 11 Part A and Part B?
Part A is your ongoing duty as a carrier to systematically inspect, repair and maintain every vehicle under your control, and to keep the records that prove it. Part B is the scheduled inspection a licensed technician performs, usually once a year, that ends in a certificate and a decal.
Which carriers need a written maintenance program?
Every National Safety Code carrier. Alberta states plainly that all NSC carriers are required by law to write and implement safety and maintenance programs, and the standard applies to commercial vehicles over a registered gross vehicle weight of 4,500 kg.
How long do you have to keep vehicle maintenance records?
Longer than most carriers expect. In Alberta, trip inspection reports are kept at least six months, but any report that led to maintenance work is retained with the maintenance documents for the current year plus an additional four years.
What happens if you have no maintenance program at an audit?
A missing or unwritten maintenance program is one of the most common findings at a facility audit, because it is a requirement in its own right and not just a consequence of having tidy trucks. It affects your safety rating and your carrier profile, and a poor result there can put your Safety Fitness Certificate at risk.

If the trucks are fine and the program was never finished

That is the usual shape of this, and it is a writing and filing job rather than a shop problem. We write the maintenance program to your units and your own intervals, and set the records up per vehicle so the file an auditor asks for is the file your shop already works from. The trip inspection reference is free in the library.