Authorities in New Delhi asked Uber Technologies and its Indian rival Ola on Tuesday to cease operations, saying that otherwise their applications for radio-taxi licences would not be processed, letters seen by Reuters show.
Government ordered a halt in December to operations of all unregistered web-based taxi companies after a female passenger reported she had been raped in New Delhi by a driver contracted to US cab company Uber.
Uber halted operations after the complaint but resumed in January after applying for a radio-taxi licence. Ola, backed by Japan's SoftBank, continued operations.
Delhi's government transport department said in separate, similarly-worded letters to local units of Uber and Ola that continuing their taxi services would contravene a December order by the government.
Rules set by Delhi's transport department in December require companies operating taxi-hailing apps to install emergency buttons in their cabs and have tracking devices.
"In order to process your application further, I am directed to seek a sworn affidavit declaring therein that you are complying with the ban order imposed upon your company in letter and spirit," an official from the transport department wrote.