The use of two primary trunk facilities over separate routes or different methods to control one communications channel.

A split or dual bowden cable and housing system used for actuation of a single component or control action.

The segregation of responsibilities to increase internal controls. This procedure requires that two members of the staff be involved in a transaction.

A system of levers and controls arranged in such a fashion so that either the pilot or the passenger can fly the aeroplane

Dual Control are Mike Ball (also known as Bally) and Phil Davis (also known as DJ Styles) from Manchester, UK. They are signed to Grand Central Records independent record label, and their music is primarily instrumental hip hop, with a typical Grand Central sound.