Question A converter dolly that has ABS can be identified: Answers By a blue sticker. By an orange sticker. By a yellow lamp on the left side of the dolly. By a blue lamp on the left side of the trailer. Explanation Dollies manufactured on or after March 1, 1998 must have Anti-Lock Braking Systems (ABS). A dolly with ABS must be identifiable by a yellow lamp on its left side. This questions appears in the following tests: Illinois Double New Jersey Double Pennsylvania Double