Government once admitted that road signs cannot remain imperial in a metric world

Official government documents from the early 1970’s stated that road signs cannot remain imperial while the rest of the UK goes metric. One of these documents is an official letter from the Ministry of Transport (MOT), as the Department for Transport (DfT) was then called. Would you believe it? Compare that with the current attitude of the DfT today, which directly contradicts the admission in the MOT letter.

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Why the Government scrapped plans to convert UK speed limit signs to km/h in 1970

On 9 December 1970, the Minister for Transport Industries John Peyton announced that the Government have decided that speed limits will not be made metric in 1973 and have no alternative date in mind. Why did the Government scrap the metrication of speed limits? Historical government documents give various reasons for scrapping the planned conversion. This article will show some of these documents, which reveal the reasons the Government gave for its decision.

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Welsh road signs in 2022 cost small fraction of DfT estimates in cash terms despite 50% inflation since 2006 DfT metric conversion report

The total estimated cost for implementing the speed limit change from 30 mph to 20 mph, including the cost for changing signs and markings on roads, has been published in the Regulatory Impact Assessment (RIA) undertaken by the Welsh Government on 20 mph speed limits. The published document gives a breakdown of road sign costs. These costs are several times lower than the Department for Transport (DfT) cost estimates of conversion of road traffic signs to metric units in cash terms despite 50% inflation during the 16-year period between the two reports.

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Cost is no barrier to rollout of 20 mph speed limit

For years, the DfT has given cost and diversion of funds from other parts of the transport budget as arguments against the metrication of UK road signs. While all kinds of arguments have been made for and against the reduction of the speed limit on local roads to 20 mph in London and Wales, I have not heard any opponents of the rollout of 20 mph speed limits say that it costs too much or that it diverts funds from other parts of the transport budget. This shows that the DfT arguments against changing road signs to metric units are bogus.

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Gibraltar is far ahead of UK on metric road signs

I came back from a short trip to Gibraltar one week ago and noticed that all their road signs were metric. The only imperial units I saw on road signs there were on dual-unit restriction signs. Many showed metres only, but none showed only feet and inches. Gibraltar road signs are almost exclusively metric with only limited use of imperial units, the mirror image of the UK situation.

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Opportunity missed to save £ millions on new speed limit signs in Wales

An opportunity to save millions of pounds on new speed limit signs in Wales has been missed by the failure to synchronise the lowering of the default speed limit on roads in built-up areas in Wales with a switch to metric speed limits.

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The other victory UKMA won in the end

The previous article describes how weights and measures legislation was saved from the axe by changes to the REUL Bill. There was another important victory that has also been won by UKMA with the help of powerful stakeholders though it took years to win. UKMA spent years fighting the Department for Transport before the battle to make metres mandatory on restriction signs was eventually won.

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Metric speed limits in Myanmar and Liberia

According to the US Central Intelligence Agency (CIA) factbook, “only three countries – Burma (former name for Myanmar), Liberia, and the US – have not adopted the International System of Units (SI, or metric system) as their official system of weights and measures”. 1 The key word in this sentence is “official”. It does not mean that they do not use the metric system. In fact, Myanmar and Liberia use metric speed limits unlike the UK.

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Recent YouGov survey on attitudes to metrication of road transport

On 4 April 2023, YouGov carried out a survey of 4808 British adults about changing the rules around speed and distance in the UK from miles to kilometres. It revealed insights on different attributes based on region, politics, and age.

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Odd British Measurement Usage in the Transport Sector

Some aspects of measurement usage in the British transport sector appear to be uniquely British with no known parallel across the whole world. The British really are out of step with the modern world when it comes to transport measurements. The British transport sector is one of the last imperial bastions in the UK thanks to DfT policies.

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