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Compared to drum brakes, disc brakes
reduce stopping distances by almost 40 percent. Because pressure is
continually applied, it's easier for the vehicle to come to a complete
stop.
Disc brakes almost completely stop brake fade.
Disc brakes don't increase the wear of brake linings on a trailer
or disc pads on a tractor.
Still, despite all of the advantages, change isn't always embraced
by the masses. In the United States, no regulation demands the use
of disc brakes, which are viewed as a high-end item because they're
about twice the cost of drum brakes. Currently, about 95 percent of
the U.S. heavy-duty truck market relies on drum brakes. In Europe,
more than 80 percent of commercial trucks already use disc brakes.
The complete shift to air disc brakes may require 10 to 15 years. |
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