The Metro fares can be paid using cash or the ORCA Card which has two discounted fare options
Access is King County Paratransit provider
Transportation from buses, planes, trains, para-transit and taxis have new regulations to follow while providing accessible service to people with disAbilities.
The Department is revising its rules under the Americans with Disabilities Act (ADA) and section 504 of the Rehabilitation Act of 1973, as amended (section 504), specifically to provide that transportation entities are required to make reasonable modifications/accommodations to policies, practices, and procedures to avoid discrimination and ensure that their programs are accessible to individuals with disabilities.
This rule is effective July 13, 2015.
You can access the complete specifics of this
Transportation final rule