The Prince George’s County Council is expected to vote in the next few weeks on changes to the tax medallion system that drivers said would undo gains they made last year after a nearly five-year political battle. County Council Chairman Ingrid M. Turner (D-Bowie) said the council would take up the matter before the August recess.

The measure, sponsored by council member William A. Campos (D-Hyattsville) and backed by County Executive Rushern L. Baker III (D) would cap medallions at 1,044, about the number now in use in Prince George’s. And it would halt a process that would allow the county to issue an additional 500 in the next five years.

Drivers say it unfairly favors three companies that control most of the certificates. The owners, who at a Tuesday hearing were represented by former county executive Wayne K. Curry (D), say expanding the system would flood the market and could compromise public safety.

The bill also would expand the number of medallions for handicapped-accessible taxis, Campos said.