Document ID: chunk:federal_register_of_legislation:F2024L00443:reg:3:p13
Version: federal_register_of_legislation:F2024L00443
Segment Type: reg
Provision Reference: reg 3 (pt 13/14)
Character Range: 120515–123250

ISC tests shall be submitted to the granting type approval authority within ten working days from the execution of each test on a single vehicle. The test results shall be accompanied by a comprehensive test report at the end of the tests. The results shall be incorporated in the sample in chronological order of execution.
The granting type approval authority shall incorporate all valid emission test results to the relevant open statistical procedure until a 'sample fail' or a 'sample pass' outcome is reached in accordance with paragraph 5.10.5.

              5.10.4. Treatment of Outliers
The presence of outlying results in the sample statistical procedure may lead to a 'fail' outcome in accordance with the procedures described below:
(a) Outliers shall be categorised as mild, intermediate or extreme.
(b) An emissions test result shall be considered as a mild outlier if it is more than the applicable emission limit but less than 1.3 times the applicable emission limit. The presence of a mild outlier only counts in the number of failed results in paragraph 5.10.5. below.
(c) An emissions test result shall be considered as an intermediate outlier if it is equal or greater than 1.3 times the applicable emission limit. The presence of two such outliers in a sample shall lead to a fail of the sample.
(d) An emissions result shall be considered as an extreme outlier if it is equal or greater than 2.5 times the applicable emission limit. The presence of one such outlier in a sample shall lead to a fail of the sample. In such case, the plate number of the vehicle shall be communicated to the manufacturer and to the granting type approval authority. This possibility shall be communicated to the vehicle owners before testing.

              5.10.5. Pass/Fail decision for a sample
For the purposes of deciding on a pass/fail result for the sample, 'p' is the count of passed results, and 'f' is the count of failed results. Each passed test result shall increase the 'p' count by 1 and each failed test result shall increase the 'f' count by 1 for the relevant open statistical procedure.
Upon the incorporation of valid emission test results to an open instance of the statistical procedure, the type approval authority shall perform the following actions:
(a) update the cumulative sample size 'n' for that instance to reflect the total number of valid emissions tests incorporated to the statistical procedure;
(b) following an evaluation of the results, update the count of passed results 'p' and the count of failed results 'f';
(c) compute the number of extreme and intermediate outliers in the sample in accordance with paragraph 5.10.4.;
(d) check whether a decision is reached with the procedure described