I assume that the Deputy is referring to Statutory Instrument No. 389 of 1996, entitled Dangerous Substances (Conveyance of Scheduled Substances by Road) (Trade or Business) (Amendment) Regulations, 1996, which were signed into law on 13 December 1996 by the Minister for Labour Affairs.
The reason for the making of these Regulations was Council Directive 94/55/EC which applied the terms of the European Agreement concerning the International Carriage of Dangerous Goods by Road, generally known as the ADR, to national transport with effect from 1 January 1997. The Directive permitted member states to authorise the continued use of vehicles constructed before 31 December 1996, which did not comply with the standards of the ADR provided that they complied with national requirements. Regulation 4 of S.I. No. 389 of 1996, which transposed this provision in the Directive, provided that the current version of the ADR would not apply to vehicles registered before 1 January 1997 provided such vehicles comply with an earlier (1985) version of the ADR. The 1985 version of the ADR did not require vehicles to have ABS brakes whereas the current version does. Vehicles registered after 1 January 1997 which are intended to carry dangerous goods must comply with the current version of the ADR and, accordingly, must have ABS brakes. The Regulations apply to all such vehicles whether new or second hand and whether imported or not.