
1 
These Regulations may be cited as the Road Traffic Acts 1960 and 1972, and Road Traffic Regulation Act 1967 (Metrication) (No.2) Regulations 1981 and shall come into operation on 1st November 1981.
2 
For the words expressing imperial units of measurement specified in column (2) of the Schedule to these Regulations in the sections in the Road Traffic Act 1960, the Road Traffic Regulation Act 1967, and the Road Traffic Act 1972 specified in column (1) of that Schedule there are substituted the words expressing metric units of measurement specified in column (3) of that Schedule.
Norman Fowler
Secretary of State for Transport
7th September 1981
SCHEDULE


(1) (2) (3)
Sections of Acts Words expressing imperial units of measurements Words expressing metric units of measurement
Road Traffic Act 1960
section 253(2)(b) sixty degrees Fahrenheit 17.5 degrees Celsius
 thirty inches of mercury 1.013 bar
Road Traffic Regulation Act 1967
section 99(2)(b) sixty degrees Fahrenheit 17.5 degrees Celsius
 thirty inches of mercury 1.013 bar
Road Traffic Act 1972
section 36A(5) three tons 3050 kilograms
section 36A(6)(b) three tons 3050 kilograms
section 36A(8) three tons 3050 kilograms
section 190(2)(b) 60° Fahrenheit 17.5 degrees Celsius
 30 inches of mercury 1.013 bar