Pioneer AVIC-S2 RU - Manual (Page 54)

4.7.1.3 Built-in cameras
Some cameras are built in traffic lights. They work like fixed cameras, but they are
difficult to spot. The warning for proximity and speeding is the same as for the fixed
cameras.
These cameras are displayed with the following symbol:
4.7.1.4 Section control cameras
These cameras work in pairs, and do not measure your current speed but your
average speed between the two cameras. Both will identify your car, and record the
exact time you pass them. The difference between the two points of time will be used
to calculate your average speed.
AVIC-S2 will warn you when you approach one of these cameras, but as you pass
by, the warning stays on, and your average speed is measured until you reach
another camera of this type. If your average speed exceeds the speed limit between
the two cameras, you will receive the same special warning sound as with the other
camera types.
Note: In the rare case AVIC-S2 cannot register the moment you pass the second
camera (e.g. it is placed at the exit of a tunnel where GPS position is not yet
available) the warning will continue. Just tap the camera symbol displayed on the
screen to stop the warning.
These cameras are displayed with the following symbol:
4.7.1.5 Red light cameras
These cameras check if you obey traffic lights or not. The warning is similar to fixed
cameras, but as there is no speed limit given, only the proximity is announced.
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