Mandatory direction or one-way street?

In lessons I often see learners mix up “One-way street” (a rectangle) and “Mandatory direction of travel” (a circle). That is completely normal while you are learning – nobody learns without getting it wrong first. Below is a simple rule that makes the difference clear fast.

A round blue sign and a rectangular blue sign with arrows, side by side
Two similar arrows, but different meanings: a circle (an order) versus a rectangle (information about the street).
Mandatory direction sign: a blue circle with a white arrow pointing left
A circle is an order, one single option. From here you MUST go in the direction of the arrow.
One-way street sign: a blue rectangle with a white arrow pointing left
A rectangle is shaped like a road – long and straight. The whole street runs in one direction.

The rule: shape → meaning

CIRCLE = direction, an order
At the junction you MUST travel in the direction of the arrow.

  • Arrow to the right → right turn only
  • Arrow to the left → left turn only
  • Arrow straight ahead → do not turn, drive straight on

RECTANGLE = information about the street
It describes the street – traffic is permitted only in the direction of the arrow (a one-way street). Nobody drives the other way along it.

How to tell them apart in a second

  • Look at the shape first – a circle (an order) or a rectangle (information).

Three common mistakes and what to do about them

  • “A circle always means a turn.” Not necessarily. If the arrow points straight ahead, the order is not to turn but to carry straight on.
  • “A rectangle obliges you to turn.” No. It tells you that this street runs in one direction.
  • “I did not notice the sign at the start of the street or at the junction.” Look at the signs on the side street – if you see a rectangular plate, it is probably a one-way street.

Quick answers

Does a circle with a straight-ahead arrow mean I have to speed up?

No. It means the permitted direction is straight ahead only. Turning off is not allowed.

Where should I position the car on a one-way street when turning left?

At the left-hand edge.

Practise these signs in real situations

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