TomTom Rider Reference Manual page 77

Fixed speed camera - this type of camera checks the speed of passing
vehicles and is fixed in one place.
Mobile camera - this type of camera checks the speed of passing vehi-
cles and can be moved to different locations.
Traffic light camera - this type of camera checks for vehicles breaking
traffic rules at traffic lights. Some traffic light cameras may also check
your speed.
Average speed check - these types of cameras measure your average
speed between two points. You are warned at the start and end of the
average speed check area.
While you are driving in an average speed check area, your average
speed is shown, instead of your current speed.
When you are in the speed check area, the visual warning continues to
be shown in the Driving View.
Accident blackspot
Ungated railway crossing
Toll road camera
When you first start using your device, no warning sounds are played for these types of cameras:
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