There is a legal requirement to fit an automatic temperature monitor to any vehicle used for the primary distribution of frozen food.

A primary distribution vehicle is one which carries foodstuffs from one cold store to another, with the exception of deliveries made to a back-up cold store room or a retail outlet, which are considered to be part of ‘local distribution’.

Operators should be able to supply enforcement officers with evidence of the manufacturer’s specification for any instrumentation being used, together with a current certificate of calibration for the measurement system.

During transit, detailed examination of the load, other than checking of the air temperature monitoring record, is not possible without suitable refrigerated facilities. It is therefore recommended that, where possible, checking of the load temperature takes place either at the beginning or the end of a journey.