---
title: "What must you do as soon as you join the moto… | Theory Test"
description: "What must you do as soon as you join the motorway? The correct answer is “Remain in the left-hand lane unless overtaking”. Read the instructor's explanation o"
lang: en
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[Theory test](/theory)/ [Question bank](/theory/questions)/ Motorway Rules 

# What must you do as soon as you join the motorway?

DVSA-style practice question · Motorway Rules

## The answer options

-   Enter the centre lane and stay there 
-   Remain in the left-hand lane unless overtaking**Correct** 
-   Try to overtake 
-   Adjust your mirrors 

## Why that is the answer

As soon as you join a motorway, you must stay in the left-hand lane. This is the normal driving lane for all vehicles. The middle and right-hand lanes are for overtaking only. Staying in the centre lane when the left lane is clear is known as lane hogging, which is unsafe and contrary to Highway Code guidance. Mirrors should always be adjusted before you begin driving, never while moving.

## How this comes up in the real test

Questions from motorway rules appear throughout the 50-question multiple-choice section, and the wording changes between versions. Learn the rule rather than the sentence: the DVSA can ask the same point from the opposite direction, and a memorised answer falls over the moment the phrasing moves.

The pass mark is 43 out of 50, so seven wrong answers is your entire margin. If a whole category is shaky, run the topic practice below until you are getting every question right for the right reason, then go back to full mocks under the clock.

[Practise Motorway Rules](/theory/quiz/motorway-rules)[Sit a full mock test](/theory/mock-test)

## More motorway rules questions

-   [Before making a journey on the motorway it is important to check your vehicle fully. Why is this?](/theory/questions/before-making-a-journey-on-the-motorway-it-is-important-to-check-your-vehicle-fully-why-is)
-   [Following a breakdown on the hard shoulder, how should you rejoin the motorway?](/theory/questions/following-a-breakdown-on-the-hard-shoulder-how-should-you-rejoin-the-motorway)
-   [How do smart motorways avoid traffic clustering?](/theory/questions/how-do-smart-motorways-avoid-traffic-clustering)
-   [How should you deal with traffic already on the motorway when joining from a slip road?](/theory/questions/how-should-you-deal-with-traffic-already-on-the-motorway-when-joining-from-a-slip-road)
-   [In England and Wales, traffic officers work on motorways as well as some secondary routes. What powers do they have?](/theory/questions/in-england-and-wales-traffic-officers-work-on-motorways-as-well-as-some-secondary-routes-w)
-   [On a motorway, how are the lanes to be used?](/theory/questions/on-a-motorway-how-are-the-lanes-to-be-used)

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