"There is no evidence that these existing signs constitute a danger, and keeping the signs will preserve local history while saving the township money," Toomey said.
The township's Board of Commissioners said that replacing the cast-iron signs, which are nearly a century old, would cost $1.5 million.
In 2009, the Federal Highway Administration set new standards for road signs with certain deadlines, including a requirement that neighborhood street signs be replaced by January 2018.
The new signs are meant to be more visible, especially at night, federal officials said.
Other communities also facing the new requirements have registered their complaints with the federal government.
LaHood reopened the comment period on the regulations, and federal transportation officials are weighing possible revisions.
Cheryl Gelber, a Democratic township commissioner in Lower Merion, said in Toomey's news release that the historical street signs "help identify Lower Merion as a municipality that cares about its historic heritage."
Contact staff writer Robert Moran at 215-854-5983 or firstname.lastname@example.org.