RAM 2500 2019 Owner's Manual page 214

212 SAFETY
The BSM system is designed not to issue an alert on
stationary objects such as guardrails, posts, walls, foliage,
berms, snow banks, car washes etc. However, occasionally
the system may alert on such objects. This is normal opera-
tion and your vehicle does not require service.
Overtaking/Passing
Stationary Objects