Roll Stability Control
WARNING
The Roll Stability Control system is intended only
as an aid for a conscientious and alert driver.
Carefully read the information in this manual to
understand this system and its limitations. The
Roll Stability Control system is not a substitute
for safe driving procedures. Failure to drive
safely, and use the system properly, could result
in personal injury and/or death and property
damage.
The RSC system automatically reduces engine
power, applies the engine brake, and/or applies the
tractor and trailer brakes when the sensor detects
that the vehicle is at risk of rolling over. RSC can in-
tervene even before an advisory message is dis-
played.
The dash indicator light illuminates whenever the
RSC system intervenes.
Hard-Braking Advisor
The hard braking advisor uses the information from
the ABS wheel speed sensors to determine when
braking is severe enough to produce lockup at one
or more wheels on the tractor, and/or very rapid ve-
hicle deceleration. Shortly after a hard braking event
occurs, an advisory message is displayed in the
driver message center, indicating that the braking
behavior was too aggressive for the current road sur-
face conditions. This system is not a replacement for
a driver’s good judgment.
From the highest risk level to the lowest risk level,
the system will sound a warning tone and display a
message, as shown in
Fig. 4.28.
Trip/Leg Totals
The driver message center records the number of
messages received and displays the number of mes-
sages as counts. RSA and hard braking event data
(HBED) counts can be viewed in the trip advisory
screen and the leg advisory screen. The trip and leg
advisor screens count both the roll stability advisories
(ROLL) and hard braking events (BRK). For ex-
ample, if during a trip, the driver message center re-
corded the events in
Table 4.5, the message center
would display as shown in
Fig. 4.29.
RSA/HBED Count
Message Received Message Counts
RSA Level 3 2
RSA Level 2 3
RSA Level 1 7
HBED Level 3 5
HBED Level 2 1
HBED Level 1 8
Table 4.5, RSA/HBED Count
If the count reaches more than 9 occurrences an up
arrow will appear to indicate to the driver that the
count has exceeded 9 counts. See
Fig. 4.30.
Overhead Instrument Panel
The optional overhead instrument panel may hold a
citizen’s band (C/B) radio and any switches that can
not be accommodated on the driver’s or auxiliary
dash panels.
The underside of the overhead console also holds
the sun visors and the optional dome/reading light
assembly. For more information on the dome/reading
light assembly, see
Chapter 7.
07/25/2008
TRIP ADVISORIES
237 ROLL 518 BRK
f040770
ABC DEF
A. RSA lev. 3 Count (2)
B. RSA lev. 2 Count (3)
C. RSA lev. 1 Count (7)
D. HBED lev. 3 Count (5)
E. HBED lev. 2 Count (1)
F. HBED lev. 1 Count (8)
Fig. 4.29, Trip Advisor Message Screen
07/25/2008
TRIP ADVISORIES
23 ROLL 518 BRK
f040771
A
A. RSA Lev. 1 has more than 9 counts.
Fig. 4.30, Trip Advisor Message Screen (more than 9
counts)
Instruments
4.27
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