AS 2809 requires all dangerous good vehicles to be fitted with a rollover shutdown device. Apart from iROS, all these devices are a mixture of crude assemblies using either ball bearings floating in oil, or mercury switches, to “determine” when a vehicle has rolled over.
The iROS concept was conceived in mid 2002 from dangerous goods industry operators demanding a more accurate, dependable and reliable roll over switch device for shutting down a vehicle that has been involved in a “rollover”, at the same time offering increased safety to the vehicle and driver with less chance of an accidental shutdown.