A widespread misunderstanding about dual carriageways is causing confusion among many drivers, according to Richard Fanders, a driving instructor from Conquer Driving. With over 40 million drivers in the UK navigating numerous Highway Code rules, it is not unusual for some to misinterpret certain road types and regulations.
In an effort to promote road safety, many drivers-both new and experienced-seek guidance and refreshers online. Fanders regularly shares educational content on social media aimed at helping drivers better understand road rules and improve safety.
In a recent YouTube video, Fanders addressed a common misconception that differentiates dual carriageways from motorways solely based on the number of lanes. He explained that many people assume dual carriageways have two lanes, while motorways have three or more. However, this is not accurate.
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Fanders clarified, “A motorway is defined by its motorway status rather than the number of lanes in each carriageway. The term ‘dual’ means two, but ‘carriageway’ does not equate to lane, which is where confusion arises.”
The defining characteristic of a dual carriageway in the UK is the presence of a central reservation separating two carriageways, each facilitating traffic in one direction. The quantity of lanes within each carriageway can vary and does not determine its classification.
He elaborated with examples: “In Great Britain, opposing traffic passes on the left. A dual carriageway consists of one carriageway for traffic in one direction on the left and another carriageway for traffic in the opposite direction on the right, separated by a central reservation. This reservation may be a barrier, kerb, or even a strip of grass. The number of lanes in each carriageway does not matter; there can be one lane or multiple lanes in each. There is no limit to the number.”
Fanders then distinguished dual carriageways from motorways based on access controls and vehicle restrictions. Dual carriageways tend to permit a broader range of vehicles including cyclists and slower traffic, while motorways have stricter vehicle usage policies.
Additionally, motorways are identified by blue road signs, whereas dual carriageways generally feature green signage.
The video received positive feedback, with viewers appreciating the clear explanation. One commented, “Useful stuff, thanks. I think I knew all the points raised, but I’ve been driving for many years now.” Another remarked, “Thank you for clearing this up for people. I was once stuck behind someone going 60mph on a single lane dual carriageway country road when the limit was 70mph.” A third viewer simply shared, “Brilliant explanation. Thank you.”