A day after cab aggregators Uber and Ola launched on-demand bike rideshare services in Bengaluru, the transport department described them as illegal. It asked citizens not to use the the services.A statement by the department said the two companies had not obtained permit or licence to operate app booked bike taxi services.The bike taxis are illegal and hence not entitled for any insurance cover, the department said, adding that action will be taken against the two companies.According to the Motor Vehicle Act, 1988, enforced in Karnataka, a two-wheeler is considered to be private transport. To run a service like Ola Bike Taxi or Uber Moto, the vehicle needs to be licensed for commercial use.Ola declined to comment, but said it categorically mentioned during the launch that Ola Bike Taxi was only a pilot service and there were no regulations to follow in the state on this type of service. Uber's response was awaited.