The Prince George’s County Council approved a special measure Tuesday that will allow the Washington Redskins to revamp their parking lot signs to include advertising, something that county businesses generally are not allowed to do.

Without any fanfare, the measure passed unanimously on a day when the council was rushing to complete a packed agenda before it recesses for six weeks.

Tony Wyllie, a Redskins spokesman, was reluctant to discuss the measure but said its chief purpose was to improve “wayfinding.” But he agreed it was a near certainty that the team would now be able to name its parking lots for advertisers. That would align them with gate names, which already are named for advertisers such as Verizon and NRG Energy.

It is unclear how widespread the practice is in the NFL, but the Giants’ and Jets’ MetLife Stadium, for example, has named its gates for large advertisers.

Prince George’s County will receive no money from the deal, according to a spokesman for County Executive Rushern L. Baker III (D).