Which combination of markings identifies a passive railroad-highway crossing?
School Bus (S) Endorsement • Free CDL Practice Question
Regulation
AAMVA CDL Manual, Section 10.4.1 – Types of Crossings, p. 10-7
Why This Matters
Recognizing the visual difference between a passive crossing's static signage and an active crossing's powered devices lets a driver immediately know how much the environment is doing to warn them, versus how much they must do themselves.