This ordinance provided for the purchase, development, and operation of an adequate mass transit system by the County.

Metrobus routes cover more than 35-million miles annually, including limited service to Broward and Monroe counties.

In late 2010 the county manager claimed that it was 'not fraud' but rather accounting errors, poor management, and erroneous information given to the auditors that triggered the investigation, including a withdrawal of $15 million through the ECHO program that was made by a transit official two hours after a letter arrived in September 2010 from the FTA telling them withdrawals had been restricted.

[11] The investigation and lack of funding let to emergency service cuts to Metrorail, Metrobus, and Metromover being considered by the agency by the middle of 2011, six months into the investigation and lack of funding which began in November 2010, causing MDT to lose $185 million in grant money.

Assistant county manager Ysela Llort became responsible for Miami-Dade Transit after director Harpal Kapoor left in April 2011.

The South-Dade Transitway will become a gold standard bus rapid transit (BRT) line, including 2 terminals and 14 new iconic BRT stations, all featuring fare gates, center platform boarding, all-door and level boarding, next bus arrival screens, air-conditioned waiting areas, and other rail-like amenities.

The first phase will extend the Metrorail to a station at the Hard Rock Stadium, with a stop at the Miami-Dade College North Campus.

[18][19] The Northeast Corridor will feature commuter rail service (potentially Tri-Rail),[20] extending from MiamiCentral to the Aventura station along the existing Florida East Coast Railway (FEC) tracks.

One of the routes will go on dedicated lanes, mainly along SR 836, and include four stations between Tamiami Terminal and the Miami Intermodal Center.

[24] In April 2023, the Miami-Dade Transportation Planning Organization (TPO) considered commuter rail service instead of BRT as the form of rapid transit for the reason that BRT is "no longer seen as practical" and that commuter rail service on the CSX Lehigh Spur has "become more flexible [on cost].

"[25][26] In January 2024, the TPO moved forward with the commuter rail plan as well as an alternative being Metromover along Flagler Street.

The first is an extension of the current Metromover system along Miami Avenue from the School Board station to NW 41st Street.

It has two lines on 24.4 mi (39 km) of track with termini west of Hialeah, at Miami International Airport, and in Kendall.

Metromover serves the neighborhoods of Downtown, Arts & Entertainment District, Brickell, Park West, and Overtown.

All Metrobuses are wheelchair accessible, in compliance with the Americans with Disabilities Act of 1990, and all county buses except for private run routes are equipped with bicycle racks.

Paratransit/Special Transportation Services (STS) is available for people with a mental or physical disability who cannot ride Metrobus, Metrorail, or Metromover.

[34] All Miami-Dade senior citizens aged 65 years and older and with Social Security benefits ride free with a Golden Passport pass.

Veterans residing in Miami-Dade and earning less than $22,000 annually ride free with the Patriot Passport pass.

[35][36] In February 2011, Miami-Dade Transit ridership totaled 336,067 passengers, including all Metrorail, Metromover and Metrobus lines.