New York Police Commissioner Raymond Kelly said Sian Green, the British woman who had part of her leg severed in a collision involving a taxi in Manhattan, remains sedated in hospital.
Police said the taxi driver had been issued with a summons for being an unauthorised driver of the car.
Mr Kelly said the incident remains under investigation and the driver could face other charges.
More top news
The trial of a soldier accused of trying to kill his wife with a sabotaged parachute has been shown video of how it could be done.
An ITV News investigation has uncovered the staggering scale of disruption caused by over-running roadworks across the country.
Cloudy and mild tonight with cloudy skies again for most of us tomorrow.