What is a wig wag?
A type of warning system
A tube used to move air from the compressor to the tanks
A noise made by air brakes when used
A part within the braking unit that allows air to move freely
The Correct Answer and Explanation is :
The correct answer is: A type of warning system.
A wig-wag is a type of visual warning system commonly used in various vehicles and transportation systems, particularly in the context of trucks, trains, and other heavy equipment. It is a type of warning light or flag that moves back and forth, resembling the motion of a waving flag. The primary function of a wig-wag is to alert operators, drivers, or pedestrians to potential hazards or the presence of a vehicle, often in situations where visibility is reduced or there is a need to draw attention to specific operational conditions, such as when air brakes are engaged.
Explanation
The term “wig-wag” historically referred to a mechanical system used in older railroads, where a flag or light would physically move back and forth to signal a train’s approach or a potential hazard. This movement helped ensure that the signal was noticeable, especially in busy or noisy environments. Over time, the term was adopted for various other uses, including in vehicle warning systems.
In modern applications, wig-wags are commonly associated with emergency vehicles and trucks. For example, in vehicles equipped with air brakes, the term might refer to a system where a light or a flag moves to signal the activation of the air brakes or other significant operational changes, serving as a visual cue to others nearby. Additionally, the term is sometimes used to describe systems in traffic control or industrial settings, where visual signals are essential for safety.
By providing a clear visual indication that is hard to miss, wig-wag systems improve safety by alerting individuals to changes in the vehicle’s status or to the presence of hazards, thus preventing accidents or misunderstandings in potentially dangerous environments.