Dodge 2013 Dart Owner's Manual page 116

114 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
The BSM system is designed not to issue an alert on
stationary objects such as guardrails, posts, walls, foliage,
berms, etc. However, occasionally the system may alert
on such objects. This is normal operation and your
vehicle does not require service.
Overtaking/Passing
Stationary Objects