neutral safety switch

neutral safety switch

[¦nü·trəl ′sāf·tē ‚swich]
(electricity)
An electric switch that is connected to the ignition switch of an internal combustion engine and prevents starting the engine unless the transmission shift lever is in the neutral or park position, or the clutch pedal is depressed.
References in periodicals archive ?
On the water: Clear a fouled intake or water pump: Shift the motor into neutral and engage the neutral safety switch and throttle-up in reverse.
A park neutral safety switch (PNSS) is required to switch on back-up lights, prevent vehicles from being started in gear and prevent the transmission from being shifted from park without the foot brake engaged.