To amend the Authorization for Capital and Preventive Maintenance Projects for the Washington Metropolitan Area Transit Authority and the National Capital Area Interest Arbitration Standards Act of 1995, and for other purposes.

Grants for Reliable, Efficient, and Accountable Transit Act This bill amends the Passenger Rail Investment and Improvement Act of 2008 to reauthorize capital and preventive maintenance projects for the Washington Metropolitan Area Transit Authority (WMATA). The bill revises provisions relating to standards for WMATA arbitrators and enforcement of awards in labor disputes. The state of Maryland, the Commonwealth of Virginia, and the District of Columbia (Signatories) shall amend the WMATA Compact to limit the annual growth in the rate of spending by each signatory by not more than 3% to subsidize operational needs of WMATA. The bill sets forth whistle-blower protections for WMATA employees and criteria for pension benefits for current and prospective WMATA employees.