Following on from the previous MV article about the 100 ml liquid rule, we look at other airport regulations that involve measurements. Where measurements are involved, they tend to be expressed in the metric system, which is used worldwide. Metric units are used in airport regulations around the world. Here, we focus on rules at British airports.
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London City Airport recently scrapped 100 ml liquid rule, which still applies in airports worldwide.
On 4 April 2023, London City Airport scrapped the 100 ml liquid rule. 1 Since 2006, airports worldwide have insisted that travellers can only bring liquids in containers of up to 100 ml in their carry-on bag. 2 These days, we take it for granted that the 100 ml limit for liquids at international airports around the world is exactly the same quantity. This is a triumph for the metric system, which replaced many different national systems long ago. Before the metric system, the same unit names were used for different quantities in different national measurement systems and there was no common definition for these units. The worldwide 100 ml liquid rule shows the benefits of a world standard measurement system for international travellers (i.e., the metric system).
Continue reading “London City Airport recently scrapped 100 ml liquid rule, which still applies in airports worldwide.”Parallels between metrication and airport expansion policy
Ronnie Cohen has observed several similarities between successive governments’ policies on airport expansion and metrication. Although they are completely unrelated issues and there is no link between the two, it speaks volumes about the inability of the British government to act in the national interest and to face down opposition where necessary.
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Metric Views 