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Dangerous loads and lattices

Published online by Cambridge University Press:  22 September 2016

E. Keith Lloyd*
Affiliation:
Faculty of Mathematical Studies, The University, Southampton SO9 5NH

Extract

There are probably few readers of the Gazette who also read the weekly periodical Commercial Motor, but it was a table appearing in an article in the latter which caught the author’s eye and provided the inspiration for the present work.

In recent years legislation has been introduced which requires that lorries carrying dangerous substances must also bear panels on which appear, inter alia, codes identifying the substances and giving an indication to the fire brigade of what action should be taken in the event that the vehicle is involved in a collision or other emergency. Examples of the codes are shown in Figs. 1 (a) and (b). The former is probably the most commonly seen code as it is that displayed on petrol tankers; the latter is a code seen on a vehicle carrying liquid nitrogen.

Type
Research Article
Copyright
Copyright © Mathematical Association 1984

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References

1. Oldridge, Les, Know the Law (Danger loads: the regs, 4), Commercial Motor, w/e March 27 (1982).Google Scholar
2. Abdali, S. Kamal, Verification of associativity of a binary operation, Math. Gazette 54, 372374(1970).Google Scholar
3. Approved substance identification numbers, emergency action codes and classification of dangerous substances conveyed in road tankers (the approved list). H.M.S.O. Google Scholar