Introduction
The instructor should use the
pretest included in the downloadable file to provide a
basis for novice driver entry knowledge of this topic area. Show
Transparency ABS-1 to provide background information
for ABS development.
Use the
following questions to initiate discussion about the development of an
anti-lock brake system:
When was the technology available?
An anti-lock brake
system, which prevents wheel lock-up during braking, was first patented for
passenger car application in the 1930s.
On what type of vehicle was the first application of ABS
technology used?
ABS was first introduced in the 1930s for use on
aircraft.
When did ABS become readily available for passenger
vehicles?
Interest in developing ABS for production automobiles
emerged at about the same time as that for aviation. Several suppliers became
interested in ABS, but interest waned and research was discontinued for several
years. In the 1980s, interest was renewed as many vehicle safety technologies
were developed for use in passenger vehicles.
What road vehicles were first required users of ABS
technology?
ABS regulations for heavy duty trucks were first introduced
in the United States (1975-76) to reduce crashes due to traction loss. This
technology advancement allowed for fewer jackknifing situations due to brake
traction losses. The mandate, although revoked, has been reinstated in early
1997.
