Looking at specs for the XL120, 110, and 80 trailers, it says ABS not required. Are RGN's exempt from ABS? Why?
ABS not required
Discussion in 'Heavy Haul Trucking Forum' started by CharlieK, Nov 22, 2016.
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snowman_w900 and CharlieK Thank this.
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No abs on my 65 ton
blacklabel, snowman_w900 and johndeere4020 Thank this. -
snowman_w900 and 4mer trucker Thank this.
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No it wasn't
snowman_w900 and johndeere4020 Thank this. -
Abs is exempt on 51 ton or more.
blacklabel, passingthru69, snowman_w900 and 3 others Thank this. -
The amount of air capacity required by an air brake equipped vehicle is determined by the number of brake chambers on the unit.
The more tonnage carrying capacity you have, naturally requires more axles, which correlates to more brake chambers thus increasing the air reservoir capacity.
ABS systems have the ability to make way more applications and releases than a driver can due to ECM control as opposed to an actual air pressure signal from the brake pedal.
This means the ABS system has the ability to demand more air volume than the reservoir capacity as well as the ability of even a >30CFM twin cylinder compressor can replenish via a 3/8" DOT approved brake supply line can handle.
So to remove the possibility of an ABS system to completely deplete the air system and engage the emergency spring brakes to a total unit lock-up leading to a loss of vehicle control, large tonnage (>50) units are exempt.
So it's actually safer for large capacity unit to NOT have an ABS system.ChevyCam, LoneCowboy, Bo Hunt and 14 others Thank this. -
Yep and you don't need maxi brakes either
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I don't have those on the big trailer either
johndeere4020 Thanks this. -
passingthru69 and Dye Guardian Thank this.
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