Acura 2009 TSX 00X31-TL1-8001 - Manual (Page 24)

Navigation System 23
Getting Started
Viewing Flow Data
Traffic flow data is displayed as colored
bands on either side of the freeway (see
Traffic Display Legend on page 21).
The different colored bands represent
the average road speeds as determined
by “under-road sensors.”
While driving to your destination on a
road that has traffic flow data, your
route line color is used to display the
traffic flow data. This means that when
the map scale is set to one of the traffic
scales (1/20 through 5 mile scale), your
blue route line may appear as alternating
orange, red, or blue segments (see
Traffic Display Legend on page 21).
NOTE:
A blue route line segment on a freeway
can mean one of two things:
• Under-road sensors, GPS probes,
cell phone probes, and other methods
used to collect traffic speed
information indicate free flow traffic.
• The road has no sensors, and traffic
conditions are unknown (they could
be congested).
Naturally, only roads with these sensors
or probes will show traffic information.
The amount of flow data varies
considerably from one city to another.
This map display is refreshed
continuously. You can only view traffic
information in the city where you are
located.
NOTE:
• Traffic flow and incident icons are
displayed on the 5 miles (8 km) or
less map scale.
• Not all freeways within a
metropolitan area have traffic flow
data (colored bands on the side of the
freeways) - this is normal, and you
cannot assume that a lack of data
implies no traffic.
• Not all cities have traffic flow
information. See cities listed on
page 137.
• Due to freeway maintenance and
construction, traffic flow may be
available only for one side of a road,
or be missing entirely for some
portion of the freeway.
• The displayed traffic flow may
disagree with information from other
audio or Internet-based traffic
displays.
• If traffic flow is not showing, verify
that the “TRAFFIC” selection for the
Icon Bar is ON, and that the icon
options for traffic are both ON (see
page 67).