The system might activate (warn the driver, apply the brakes) when it detects or encounters these situations:
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Metallic projections on the road
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Metallic manhole and drain covers
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Signs and guardrails ahead
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Low overpasses and narrow gates
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Approaching vehicles that are turning left or right
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Passing slower vehicles ahead
The system may not activate (no warning or intervention) when it detects or encounters these situations:
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Low-speed, heavy traffic (such as in a traffic jam)
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Being cut-off by a slower vehicle
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Approaching a vehicle stopped at an angle
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Driving on curves
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Approaching a bicycle or moped
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Dirt or snow stuck on the emblem
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Heavy rain or snow
When the CMBS activates, it sounds and feels just like ABS activation.