A coalition of supporters of congestion pricing filed two lawsuits on Thursday that demand that Gov. Kathy Hochul allow the tolling program to move forward, arguing that she exceeded her authority when she indefinitely suspended the start of congestion pricing last month.

The first lawsuit was filed by the City Club of New York, a civic organization founded more than a century ago. It argues that Governor Hochul violated the law, approved by the State Legislature in 2019, that called for the creation of the tolling program, which would have charged most drivers $15 to enter Manhattan below 60th Street in an effort to reduce traffic and pollution.

The second lawsuit was filed by Riders Alliance, a grass-roots organization of transit riders, and two environmental groups. It contends that Ms. Hochul’s move undercut the state’s efforts to cut down on greenhouse gas emissions, which contribute to climate change.

“Governor Hochul may dislike congestion pricing; she may fail to grasp the threats of climate change or our need for a reliable, accessible transit system,” Betsy Plum, the executive director of the Riders Alliance, said at a news conference on Thursday morning.But congestion pricing is still the law, she said.

The lawsuits, filed in New York State Supreme Court, were produced by a coalition of advocacy organizations and other supporters of congestion pricing that was convened by Brad Lander, the New York City comptroller. The group has not ruled out additional lawsuits over the halting of congestion pricing, Mr. Lander said at the news conference on Thursday. But his office does not plan to be a plaintiff in any upcoming lawsuits, he added.

In a statement on Thursday, Ms. Hochul’s office noted that there were numerous pending lawsuits related to congestion pricing, and said that they had been filed by groups “trying to weaponize the judicial system to score political points.”