151
141 AB0A0602
The recognition of valid road limits
depends very much on road
conditions, the positioning of signs,
visibility conditions and various other
factors. The system supplies and
reminds the driver of the most plausible
road limit.
The TSR system cannot provide an
applicable speed limit in the following
cases:
if an end-of-limit sign is recognised
and if the navigator (where provided)
is unable to provide a valid limit on
that stretch of road. The symbol
appears on the display.
in case of system fault or
unavailability, the symbol appears
on the display.
NOTE In some cases, the system
may show this symbol when
recalculating the route by the
navigation system (where provided).
With Uconnect™ without
navigation system
The TSR system uses the camera,
located in the central area of the
windscreen fig. 142 and reminds the
user of the last road limit recognised by
the camera.
142 AB0A0538
NOTE Without a navigator, the system
cannot provide:
the implicit limits (e.g. the general
speed limit on motorways). In these
cases the system can show the last
road sign encountered (e.g. the speed
limit of the entrance ramp);
in general, the limit in force for a
road where a speed limit sign was not
previously encountered and correctly
recognised.
After travelling a certain distance, the
road limit symbol turns grey to indicate
that it is no longer considered reliable
by the system. Upon recognition of a
new sign, the TSR symbol will become
coloured again.
WARNING In the absence of a
navigator, the system cannot recognise
the unit of measurement of the
country you are travelling in, but only
the numerical value of the road sign
encountered along the road. The
speed limit suggested and offered
to Intelligent Speed Assist (ISA) and
Intelligent Adaptive Cruise Control
(IACC) systems (where active) is
therefore intended according to the unit
of measurement set by the user on the
instrument panel display. Therefore, for
the ISA and the IACC to be of practical
help in complying with the limits in
force, the driver must set the unit of
measurement consistent with the
country in which they are travelling.
With Uconnect™ with navigation
system
When the navigator is present, the TSR
system integrates the detections made
by the camera with the information
provided by the navigation system.
Therefore, it can provide the implicit
limits (e.g. the general speed limit on
motorways) and to supplement with
maps the limitations of recognition of
road signs on the camera alone.
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