Division 1 Definitions

For the purposes of the laboratory alignment procedure for the measurement of rolling resistance, the following definitions apply:

1. (1)

   ‘reference laboratory’ means a laboratory that is part of the network of laboratories, the names of which have been published in the Official Journal of the European Union for the purpose of the laboratory alignment procedure, and that is able to achieve the accuracy of test results determined in Section 3 with its reference machine;

2. (2)

   ‘candidate laboratory’ means a laboratory participating in the laboratory alignment procedure that is not a reference laboratory;

3. (3)

   ‘alignment tyre’ means a tyre that is tested for the purpose of performing the laboratory alignment procedure;

4. (4)

   ‘alignment tyre set’ means a set of five or more alignment tyres for the alignment of one single machine;

5. (5)

   ‘assigned value’ means a theoretical value of the rolling resistance coefficient (RRC) of one alignment tyre as measured by a theoretical laboratory which is representative of the network of reference laboratories that is used for the laboratory alignment procedure;

6. (6)

   ‘machine’ means every tyre testing spindle in one specific measurement method; for example, two spindles acting on the same drum shall not be considered as one machine.