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Back-up beepers or an observer are required by OSHA for earth-moving vehicles with an obstructed view to the rear and no one on the ground to help guide the driver. [9] OSHA regulation 29 CFR Part 1926.601(b)(4) requires "a reverse signal alarm audible above surrounding noise level", but only when the motor vehicle has "an obstructed view to the rear".
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).
The shape differs in that the trafficator has only the lower 'blade' of the rail signal's terminal 'arrowhead', so that the retracted trafficator sits flush with the vehicle's exterior. They were common on vehicles until the introduction of the flashing amber, red or white indicators at or near the corners of the vehicle (and often along the ...
The American auto industry voluntarily adopted amber front turn signals for most vehicles beginning in the 1963 model year, [67] [68] though the advent of amber signals was accompanied by legal stumbles in some states [69] [70] and front turn signals were still legally permitted to emit white light until FMVSS 108 took effect for the 1968 model ...
Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface , tire, engine /transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds.
The oil pressure idiot light lights when engine oil pressure drops below a predetermined level. The light normally appears when the vehicle ignition is turned on, but the engine is not running, as it detects no oil pressure due to the oil pump not operating (the oil pump is powered off the crankshaft, so only operates when the engine is running ...
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Turn signals are activated by the driver to alert other drivers of their intent to turn or change lanes. [12] While the modern turn signal was patented in 1938, [13] electric turn-signal lights date back to 1907. [14] As of 2013, most countries require turn signals to be included on all vehicles driven on public roadways. The turn signal lever ...