Another politician challenged the proposal for road bridges.
He said his organization would challenge the proposal during the department's hearing process.
The Justice Department can challenge the proposal and present an alternative at a hearing on Jan. 6.
But the industry is likely to challenge the proposal, to preserve the value of taxi medallions, which now sell for more than $140,000.
Several lawsuits had been filed challenging the proposal, the company said.
The United States challenged the proposal but failed in its attempts.
Arlington County officials refused to challenge the proposal, claiming this was a fight only for the federal government (owners of the road).
Beyond that, there are at least two lawsuits challenging the proposal.
The parents unsuccessfully challenged the proposal in an administrative review process.
Soon after details of the summer-long effort were made public, Republicans wasted no time in challenging the proposal.