3.10.12. Warning devices:(1) Any self-propelled vehicle shall be equipped with a warning device that shall:(a) be installed within reach of the operator;
(b) have a sound which is special to that type of equipment and different from any other signal on the site; and
(c) be loud enough to override surrounding noises.
(2) The following must be equipped with an automatic reset backup alarm for the reverse gear:(a) any self-propelled vehicle used mainly on a site where the operator’s view, through the rear window, is obstructed;
(b) any earth-moving machinery as defined in ISO Standard 6165:2012, Earth-moving machinery — Basic types — Identification and terms and definitions;
(c) any truck having a nominal capacity of 2,250 kg or more, as defined in subsection 5 of this section.
(3) The automatic reset backup alarm device referred to in subsection 2 must have the following features:(a) have a distinct sound and a noise intensity that is superior to the surrounding noise and to the noise of the equipment on which it is installed;
(b) be visible from the rear of the vehicle and face backward;
(c) if the device is electric, it must comply with SAE Standard J994, Alarm - Backup - Electric Laboratory Performance Testing.
(4) In addition to the requirements provided for in subsection 3, the backup alarm device installed on earth-moving machinery must comply with ISO Standard 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns — Test methods and performance criteria.
(5) For the purposes of this section, “nominal capacity” means the gross vehicle weight rating certified by a motor vehicle manufacturer less the net mass of the vehicle.