Assistance dogs with identification (e.g. marked vest, harness, collar) are exempt from this rule and may travel free of charge if accompanied by passengers with:
a disability ID card (with or without the codes B / BL), or
a determination notice, or
an ID labeled "Human-Assistance Dog Partnership".
Assistance dogs without identification may also travel free of charge if accompanied by passengers with a disability ID card bearing the codes B / BL.
The muzzle requirement does not apply to assistance dogs.