Dual units have been mandatory on restriction signs since TSRGD 2016. For height restrictions, the imperial and metric units normally appear on a single sign though they can appear on separate adjacent signs. Most height restriction traffic signs for bridges now show dual units. If your vehicle complies with both values, you can drive under the bridge. If your vehicle does not comply with either value, you cannot drive under the bridge. But what if your vehicle complies with only one of the values? Can you drive under the bridge in this case?
Continue reading “Legal ambiguity of dual unit restriction signs”Tag: dimensions
Household items and litre measurements
Here is a simple method to find the litre capacity of household items you want to replace when you have lost all sources of information about their capacity. This method demonstrates a clear and simple relationship between centimetres and litres.
Continue reading “Household items and litre measurements”COVID-19 and the search for a vaccine
As the UK’s vaccination programme hits the headlines, Ronnie Cohen takes a look at the microscopic elements that are affected by viruses and the vaccines developed to fight them.
Continue reading “COVID-19 and the search for a vaccine”A Biblical specification and a problem solved (almost)
We are justifiably proud in England of the legal principles laid down in Magna Carta in 1215, but less supportive of its command, “Let there be one measure …”. However, weights and measures laws are as old as civilisation. In this article, Ronnie Cohen looks at a unit of length from 3000 years ago, and makes a comparison with today.
Continue reading “A Biblical specification and a problem solved (almost)”
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