Dodge Dart 2014 Owner's Manual page 129

Rear Monitoring
Overtaking Traffic
If you pass another vehicle slowly (with a relative speed
of less than 15 mph (24 km/h) and the vehicle remains in
the blind spot for approximately 1.5 seconds, the warning
light will be illuminated. If the difference in speed
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 127
between the two vehicles is greater than 15 mph
(24 km/h), the warning light will not illuminate.
Overtaking/Approaching
The BSM system is designed not to issue an alert on
stationary objects such as guardrails, posts, walls, foliage,
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