The Road Vehicles (Construction and Use) Regulations 1986

[F17.  In this Part of this Schedule—E+W+S

(a)a reference to the lambda value, in relation to a vehicle at any particular time, is a reference to the ratio by mass of air to petrol vapour in the mixture entering the combustion chambers divided by 14.7; and

[F2(b)“the emissions publication” is the publication entitled “In Service Exhaust Emission Standards for Road Vehicles – Nineteenth edition” (ISBN 978-1-84864-176-1) published by the Department for Transport.]]