Does the Traffic Signs Manual promote the illegal use of imperial-only vehicle restriction signs?

Eight years after the Traffic Signs Regulations and General Directions (TSRGD) were updated to require all new vehicle restriction signs to show vehicle width and height restrictions in both metric and imperial units, the Department for Transport’s Traffic Signs Manual (TSM) has still not been fully updated to take account of the fact that new imperial-only vehicle restriction signs are no longer authorised.

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50 years of metric road signs in Australia

1 July 2024 marks the 50th anniversary of the switch to metric road signs in Australia.

For about a year before the change, car manufacturers fitted dual speedometers to their vehicles and, after 1974 all new cars were fitted with metric-only speedometers. Several kinds of speedometer conversion kits were available. As a result of all these changes, conversion on the roads occurred without incident.

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Do our motorway junction numbers hinder the use of driver location signs?

Recent Metric Views articles have discussed the poor awareness of the meaning of driver location signs amongst the general public, and argued that despite their inclusion in recent editions of the Highway Code, there is still a need for a new public information campaign about these signs.

However, could there be another reason why driver location signs are poorly understood? And is there a solution that would both increase public awareness and increase their use?

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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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UK measurement muddle affects Gibraltar Highway Code

Who would believe that the negative influence of the Department for Transport’s measurement muddle would be felt far beyond our shores? Believe it or not, it has an impact in Gibraltar as its Highway Code is based on the UK highway code and always has been. Despite the fact that the Gibraltar Highway Code is reviewed and adapted to meet Gibraltar’s local requirements, it is bizarre that it includes a table of stopping distances for speeds in miles per hour, which is the only place in the Code where miles are used. Gibraltar speed limits are in kilometres per hour and distances are all metric and this is reflected everywhere else in the Gibraltar Highway Code.

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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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How to improve Highway Code 2022

The Highway Code was updated on 29 January 2022. It introduced a hierarchy of road users based on vulnerability and aimed to give priority to the most vulnerable road users. Ronnie Cohen comments.

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The 1972 White Paper on Metrication – 50 years on

2022 sees the 50th anniversary of the 1972 White Paper on Metrication – a policy document that set out the Government’s plans for the nation’s metrication programme in the 1970s.

The publication of the White Paper was approved at a Cabinet meeting held on Tuesday 11 January 1972.

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Muddled measures in car brochures

One of the last bastions of imperial units is our road network and hence car manufacturers’ marketing campaigns. Ronnie Cohen has been looking at some their promotional material.

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