What it means
Drivers must stop before signal and not proceed until it is safe to do so. At a railway crossing you MUST stop immediately when the red discs flash. Do not proceed until the lights stop flashing and it is safe.
What to do
- Stop completely, then apply 4-way stop rules.
- Yield to pedestrians and vehicles that arrived first.
In the K53 test
Flashing red equals a stop street: stop, then first-come-first-go. Treating it as a mere caution is the error.
Where you will see it
At a railway level crossing controlled by flashing red discs.
