Division 8 Assessment of the Presence of a Category ‘B’ BAS United Kingdom Original text. Later amendments are not shown. Figure 2 Example of test 2 of a Category ‘B’ BAS system. Division 8.1Test 1: Reference test to determine FABS and aABS 8.2Test 2: For activation of BAS 8.3Data evaluation ← Division 7.3 Division 8 Division →