5 Ontario Traffic Signs That Catch New Drivers Off Guard

Most people who fail the G1 knowledge test do not fail on the rules of the road. They fail on the signs. The shapes and colours are a language, and a handful of signs trip up new drivers every year because they look similar to something else or mean something less obvious than they seem. Here are five worth extra attention.

1. The green and white checkerboard

A black and yellow checkerboard warns you that the road ahead ends or changes direction sharply. People confuse it with a plain warning sign. It is telling you to slow down and prepare to turn, not simply that something is ahead.

2. Roundabout ahead

A circular arrangement of arrows means a roundabout is coming. New drivers often read it as a general “curve” sign and carry too much speed into it. Slow down, yield to traffic already in the circle, and keep moving in one direction.

3. The pedestrian crossover

This is not the same as a crosswalk at a light. At a pedestrian crossover you must stop and yield the whole roadway to people crossing, and you cannot pass another vehicle that has stopped for the crossover. It is one of the most commonly missed rules on the test.

4. Do not enter versus one way

A red circle with a white horizontal bar means do not enter. A one-way sign is a rectangle with an arrow. They protect against the same mistake, driving the wrong way, but people mix up which is which. If you see the red circle facing you, the road is closed to you from that direction.

5. Shape tells you the message

When you are unsure, let the shape guide you. A red octagon is always stop. An upside-down triangle is always yield. A diamond is always a warning. Signs that regulate what you must or must not do are usually rectangles or circles. Learn the shapes and half the signs section answers itself.

The fastest way to stop confusing them

Signs get mixed up when you memorize them one at a time instead of learning the system behind them. Colour and shape do most of the work: red means stop or prohibition, yellow means warning, orange means construction, green means permitted or directional, and the outline fills in the rest. Once you can read a sign by its colour and shape, the five above stop being tricky, because you are recognizing a pattern instead of recalling a picture. That system is worth learning first, and we break it down in how Ontario traffic sign colours and shapes work.

Practise with the real artwork

Reading about a sign is not the same as recognizing it in half a second on the test. The signs section rewards familiarity, so the most effective study is repetition with the actual Ontario sign images until each one is automatic. Cover the answer, name the sign, then check, and the five that catch people out become five you get right.

The fastest way to lock these in is repetition with the real artwork in front of you. Our free traffic signs trainer groups every Ontario sign by shape and colour so the patterns stick, and the mock test scores you exactly like the real G1.

Keep reading: how sign colours and shapes work and the hand and arm signals.

Based on the Official MTO Driver’s Handbook, Signs chapter. Last reviewed July 2026.