2024 WA CDL Practice Test: Bus - Test Based on 2024 WA CDL Handbook 7. Your school bus will have an ABS malfunction lamp that is what color? A Green. B Red. C Yellow. Next More 7/30 Progress 0 Errors Restart Next Next Bus - Test Back to Test List Class C - Test 5 Bus - Test 2 Challenge Library 12 More WA CDL Practice Tests 1 Class A - Test 1 2 Class A - Test 2 3 Class A - Test 3 4 Class A - Test 4 5 Class A - Test 5 6 Class A - Test 6 7 Class A - Test 7 8 Class A - Test 8 46 Bus - Test 2 47 Bus - Test 3