The federal government last week said it is suing Uber for allegedly discriminating against passengers with disabilities.

The Department of Justice said Uber drivers routinely refuse to serve individuals with disabilities, including those with service dogs.

Uber is the largest ride-hailing company in the United States.

The lawsuit alleges that Uber drivers have charged illegal cleaning fees for service animal shedding and imposed cancellation fees after denying service. The lawsuit also alleges that drivers have refused to allow disabled individuals to sit in the front seat so they can use the back seat for mobility devices.

Disabled individuals have missed appointments, experienced significant delays and have been stranded in inclement weather, the lawsuit said.

In a statement, Uber said all of its drivers must acknowledge and agree to comply with its service animal and accessibility policies.

San Francisco-based Uber said it prohibits drivers from denying service to someone with a service animal and it requires drivers to provide transportation to a person with a disability as long as they get into the vehicle on their own. It also prohibits drivers from refusing to assist with the stowing of devices like walkers, crutches and folding wheelchairs.

The Department of Justice is seeking $125 million for disabled individuals who have previously submitted complaints to Uber or the Department of Justice.

The case was filed in federal court in Northern California.