--- title: "Opening or Swing Bridge Ahead Meaning | UK Road Signs" url: https://fasttrackdrivinglessons.co.uk/theory/road-signs/opening-or-swing-bridge description: "Learn the meaning of the opening or swing bridge warning sign, how to react safely, and key facts for your DVSA theory test." lang: en --- # Opening or swing bridge ahead — UK road sign Warns drivers of an opening or swing bridge ahead that may temporarily halt road traffic. Image: Opening or swing bridge ahead — red, white and black triangle UK road sign (https://fasttrackdrivinglessons.co.uk/signs/opening-or-swing-bridge.svg) The 'opening or swing bridge ahead' warning sign informs drivers that the road crosses a waterway via a movable bridge that opens to allow boat traffic through. When activated, red flashing traffic signals or barriers will stop vehicle traffic until the bridge closes again. ## What this sign means This sign shows a bridge deck tilting upwards inside a red warning triangle. It alerts drivers that traffic may be held up unexpectedly by river traffic. It is often accompanied by supplementary signals such as twin red flashing lights or automatic lifting barriers. - Pictogram depicting an opening bridge span - Found near river basins, ports, and canal locks - May feature warning lights or distance indicators below ## What to do when you see it Moderate your speed and watch for warning lights, wig-wag signals, or lowering barriers ahead. - Be ready to stop if red light signals begin flashing - Switch off your engine if queued for a prolonged period - Never attempt to drive past lowering barriers or amber lights ## How this sign is tested Theory questions focus on driver behaviour at movable bridges and the correct response to twin red flashing light signals. - Understanding action required when red lights flash - Fuel conservation advice like switching off engines while waiting - Recognising bridge warning symbols in visual questions ## Common mistakes Trying to speed up to cross the bridge before barriers lower, or failing to turn off the engine during extended bridge openings. ## Test yourself on this one Road and traffic signs is the biggest category in the question bank with 102 questions, and signs turn up inside other categories too. Work through them free, no sign-up needed. Practise road sign questions (https://fasttrackdrivinglessons.co.uk/theory/practice) ## Frequently asked questions What lights are used at an opening bridge? Twin red flashing lights (wig-wag signals) are used to stop traffic when the bridge is about to open. What should I do if the bridge lights start flashing as I approach? You must stop behind the stop line unless it is unsafe to do so. Should I turn off my engine while waiting? Yes, if you expect to be stopped for more than a minute, turn off your engine to cut emissions and conserve fuel. ## Passed your theory? Get the practical booked Your theory certificate lasts two years. Most learners who use it quickly do it with an intensive course — a block of hours with a DVSA approved instructor and a practical test at the end, instead of one lesson a week for months. Intensive course prices: https://fasttrackdrivinglessons.co.uk/pricing All courses: https://fasttrackdrivinglessons.co.uk/courses Crash courses: https://fasttrackdrivinglessons.co.uk/crash-courses Automatic lessons: https://fasttrackdrivinglessons.co.uk/driving-lessons/automatic Areas we cover: https://fasttrackdrivinglessons.co.uk/driving-lessons-in Driving test centres: https://fasttrackdrivinglessons.co.uk/driving-test-centres How it works: https://fasttrackdrivinglessons.co.uk/how-it-works Test pass guarantee: https://fasttrackdrivinglessons.co.uk/test-pass-guarantee ## Structured data ```json [ { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://fasttrackdrivinglessons.co.uk/#organization", "name": "Fast Track Driving Lessons", "url": "https://fasttrackdrivinglessons.co.uk/", "email": "info@fasttrackdrivinglessons.co.uk", "areaServed": "GB", "description": "Intensive driving courses and driving lessons across the UK with DVSA-approved instructors." }, { "@type": "WebSite", "@id": "https://fasttrackdrivinglessons.co.uk/#website", "url": "https://fasttrackdrivinglessons.co.uk/", "name": "Fast Track Driving Lessons", "publisher": { "@id": "https://fasttrackdrivinglessons.co.uk/#organization" }, "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://fasttrackdrivinglessons.co.uk/search?q={search_term_string}" }, "query-input": "required name=search_term_string" } } ] }, { "@context": "https://schema.org", "@graph": [ { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://fasttrackdrivinglessons.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Theory test", "item": "https://fasttrackdrivinglessons.co.uk/theory" }, { "@type": "ListItem", "position": 3, "name": "Road signs", "item": "https://fasttrackdrivinglessons.co.uk/theory/road-signs" }, { "@type": "ListItem", "position": 4, "name": "Opening or swing bridge ahead — UK road sign" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What lights are used at an opening bridge?", "acceptedAnswer": { "@type": "Answer", "text": "Twin red flashing lights (wig-wag signals) are used to stop traffic when the bridge is about to open." } }, { "@type": "Question", "name": "What should I do if the bridge lights start flashing as I approach?", "acceptedAnswer": { "@type": "Answer", "text": "You must stop behind the stop line unless it is unsafe to do so." } }, { "@type": "Question", "name": "Should I turn off my engine while waiting?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, if you expect to be stopped for more than a minute, turn off your engine to cut emissions and conserve fuel." } } ] } ] } ] ```