TomTom App Reference Manual page 50

The alert symbol has a green background border when you are driving at or slower than the speed
limit, and a red background border when you are driving faster than the speed limit. Tap the alert
symbol to cancel the Speed Cameras warning.
Speed Cameras warns of the following types of cameras and safety-related road features:
Alert symbol Route
symbol
Description
Fixed location speed camera
Traffic light camera
This can be a camera with or without speed detection.
Miscellaneous speed camera
Bidirectional speed camera
A camera that can measure speed in both directions.
Mobile speed camera
TomTom App remembers mobile speed cameras for three hours after you
report them.
Toll road camera
Restricted-road safety camera
These cameras check for vehicles that use restricted roads, for example a
road that is not permitted to be used during rush hour.
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