Not All Driving Errors Are Equal: Serious vs. Minor Faults
One driver forgets to cancel a signal. Another pulls into a vehicle’s path and forces that driver to brake hard. Both made a “mistake,” but counting them as two equal errors tells you almost nothing. Understanding the difference between serious driving errors and minor faults helps you decide what to fix first, and helps your supervising driver coach the right thing.
When a student tells me they made five errors on a drive, my first question is always: five of what? Five forgotten mirror checks is a habit to build. One gap that made another driver swerve needs attention today. The number matters. What each mistake risked matters more.
The Spectrum of Driving Errors
Think about the difference between these:
- Being slightly off-centre in a parking space
- Forgetting to cancel a signal
- Failing to check a blind spot before changing lanes
- Entering an occupied path
- Forcing another driver to brake or swerve
- Needing your supervising driver to intervene to prevent a collision
They are all errors, but they don’t carry the same weight. The first two are normal learning moments, the third deserves real attention, and the last three put someone else at risk. A useful review of your driving shows that range instead of flattening it.
Four Useful Categories
One simple way to sort what happened on a drive is to use four categories, from least to most serious.
A relatively minor issue that can be fixed through instruction and practice.
Examples: inconsistent mirror checks, imperfect lane positioning, a late signal, inefficient steering technique.
What to do: practise it until it becomes automatic.
An error that creates a meaningful risk without necessarily causing an immediate critical event.
Examples: inadequate following distance, poor gap selection, incomplete observation before a manoeuvre.
What to do: work on it before moving on to busier roads or harder manoeuvres.
An action that puts another road user, or you, in significant danger.
Examples: entering another vehicle’s path, making a manoeuvre without adequate clearance, forcing another road user to take evasive action.
What to do: talk it through straight after the drive, and practise that skill in a lower-risk setting before returning to the situation where it happened.
Any time your supervising driver has to step in to prevent or reduce danger.
Examples: a verbal warning, a physical intervention, being told to stop, or your supervising driver taking control of the situation.
What to do: talk about what led up to it once you’ve stopped, and treat it as a sign of how close the situation came to going wrong.
Intervention gets its own category because it can accompany an error at any level. It shows how close a situation came to going wrong, which the error alone may not.
Why One Score Isn’t Enough
Imagine two drivers who each finish a drive with five observations written down.
| Driver A | Driver B | |
|---|---|---|
| What was recorded | Two missed mirror checks and three minor positioning errors | Five observations, including a dangerous gap decision and a supervisor intervention |
| Total | 5 errors | 5 errors |
| What it means | Habits to practise | A serious safety issue to address before the next drive |
On paper, those two drives look identical. In reality, they are completely different. A single number can’t show that, which is why a good review separates what happened, how serious it was and whether anyone had to intervene.
The same idea shows up in the real world. In most provinces, demerit points are weighted by how serious an offence is, rather than simply counting how many offences there are.
What a Useful Drive Review Includes
A review that separates these things gives you a clearer picture of how you’re developing:
- Coaching points: skills that need more practice.
- Safety events: actions that created a meaningful risk.
- Critical events: actions that created a serious, immediate hazard.
- Supervisor interventions: times your supervising driver had to step in.
- Recovery: how well you responded after an error. See Road Test Nerves for more on this.
This tells you and your supervising driver what to work on next, not just how the drive went overall.
Common Mistakes When Reviewing a Drive
Counting errors instead of weighing them
The problem: You decide the drive with fewer errors was the better one, even though one of those errors was a near-collision.
Better approach: Sort each mistake into a category before drawing any conclusion.
Treating everything as a disaster
The problem: Every slip feels like a failure, so it’s hard to tell what truly matters.
Better approach: Stay calm about coaching points and save your concern for serious events.
Ignoring near misses
The problem: Nothing happened, so you don’t mention it, even though another driver had to react.
Better approach: If someone else had to brake, swerve or yield to avoid you, count it as an error. Our guide to right of way covers many of the situations where this happens.
Brushing off an intervention
The problem: Your supervising driver steps in and the drive carries on without comment.
Better approach: Make a note of every verbal or physical intervention and discuss what led to it once you’ve stopped.
Letting distraction slip by
The problem: A quick glance away from the road feels minor in the moment.
Better approach: Remember that a moment of distraction can turn a small-looking lapse into a serious event, depending on what’s happening around you.
Practice Exercise: Sort the Drive
After your next practice drive, write down everything you noticed about your own driving, then compare your list with what your supervising driver noticed. Sort each item into one of the four categories by asking three questions:
- Did it create a risk to anyone?
- Did another road user have to react?
- Did anyone have to intervene?
If the answer to any of these is yes, the item belongs above the coaching-point level. Talk through the serious items first and the coaching points second. Supervisors can find advice on keeping feedback calm and useful in our guide to teaching a new driver.
Drive → sort what happened → discuss the serious items first → practise the coaching points → drive again.
The Bottom Line
A coaching point, a significant safety concern, a critical safety event and a supervisor intervention each call for a different response. Sort your mistakes instead of just counting them, and you’ll know what to practise, what to talk about straight away, and when you’re not yet ready to move on.
Good driving assessment is about understanding risk, not simply counting mistakes.
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