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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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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DfT holds back TfL from all-metric usage

Transport for London (TfL) uses metres and kilometres to express distances in its press releases with few exceptions and often uses metres elsewhere in public places. However, speeds are expressed in miles per hour, no doubt due to Department for Transport (DfT) regulations and usage. Tariffs for taxi fares are expressed in metres for short journeys and in miles for longer journeys and reflect current regulations. I praise TfL for using metric units wherever they can. It is a pity that DfT regulations and usage are holding back TfL from going fully metric.

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