Initialism for radiotelephone operator; a licensed radio-telephone operator.

Initialism for recovery time objective; maximum tolerable outage duration.

Initialism for road traffic officer; a traffic law officer.

Initialism for retransmission timeout in networking protocols.

Initialism for rejected takeoff; an aborted aircraft departure.

Initialism for rent-to-own; renting with an option to buy.

Initialism for return to office; a workplace attendance mandate.