The Karnataka transport department's decision to ban ride sharing for taxi aggregators Uber and Ola has not gone down well with those who believe this form of car-pooling will reduce traffic congestion, besides saving money for the customer. The state is hanging onto the nearly 30-year-old Motor Vehicles Act, made long before taxi aggregators arrived on the scene but applicable across India -- that says only buses can pick UP passengers from multiple locations. At present, cab-pooling is giving competition to buses, a chunk of which is the domain of the state.