OpenLegislation

Division 4 Procedure for the alignment of a reference laboratory to the assigned values

United Kingdom

Original text. Later amendments are not shown.

Each reference laboratory (l) shall align itself to each new set of assigned values and always after any significant machine change or any drift in machine control tyre monitoring data.

The alignment shall use a linear regression technique on all individual data. The regression coefficients, A1 l and B1 l , shall be calculated as follows:

RRC = A1 l × RRCm,l + B1 l

where:

RRC

  • is the assigned value of the rolling resistance coefficient;

    • RRCm,

  • is the individual measured value of the rolling resistance coefficient by the reference laboratory ‘l’ (including temperature and drum diameter corrections).