The 4.8-mile (7.7 km) system serves the greater downtown Oklahoma City area using modern, low-floor streetcars,[4] the first of which was delivered in February 2018.

[7] Bezdek launched a strategic campaign called the Modern Transit Project to generate public support for the initiative.

[12] However, after Inekon failed to meet a one-month deadline for submitting required financial-guarantee information, project staff recommended switching to Brookville Equipment Corporation, another manufacturer that had also bid for the order.

[13] On November 10, the city council voted its approval for the staff to begin negotiations with Brookville for the streetcar contract.

[13] In March 2016, the city reached a final agreement with Brookville to purchase five streetcars, with an option for a sixth, at a cost of $24.9 million.

[17] In December 2016, the city council awarded a $50 million contract for rail installation to builders Herzog and Stacy and Witbeck, with construction planned to begin in early 2017 and continue for about two years.

[27] The streetcar system is one of the conventional type using steel rails embedded into city streets, with modern vehicles powered from overhead electric wires.

[25] The fare is $1, or $0.50 for seniors at least 65, children ages 7–17, or disabled or Medicare via Embark ID card, and all riders need a ticket.

A steering committee made up of local mayors, city councillors, and other civic leaders approved plans for major expansion from the MAPS 3 system northward up the major thoroughfare Classen Boulevard to the planned 63rd Street commuter rail station stop and southward from downtown along Walker Avenue to the Southwest 25th Street (future) commuter-rail stop in Capitol Hill.

Additional plans have also been discussed for streetcar expansion to Oklahoma City University through the historic Plaza District northwest of the initial starter line.