Automakers could be required to install technology to detect drunk drivers

Cars would be prevented from starting if the operator is impaired - but some critics worry about who could access the data

Car manufacturers would be required to include technology to monitor whether US drivers are impaired by alcohol and to disable the vehicle from operating under a proposal contained in the infrastructure bill awaiting a Senate vote.

While advocates say the proposal could save thousands of lives, the move has some critics worried it could cross ethical boundaries and raise civil rights issues.