Recenter fits the complete red danger circle and will not zoom closer than this value. Lower numbers show a wider area.

Default 10 s (0.1 Hz). Does not affect yellow proximity beeps — those still ramp from 1 Hz as vehicles get closer.

Map rings (outer → inner): green dotted ~198 m heartbeat · orange dotted ~110 m warning (Yellow radius) · red dotted ~14 m danger. Corridors only draw inside the green ring.

Controls how far the yellow/red corridor ribbon extends forward from each vehicle (staleness + worst-case braking). Lower = tighter ribbons, fewer false overlaps.

0 means immediate/unlimited. Default expansion is immediate for safety; the 16 m/s contraction limit removes a typical BKK update correction over about 3–4 seconds.

Yellow ack silences warnings only. Red danger for the same vehicle still fires until you ack the red card.

Red circle radius ≈ immediate distance + full GPS accuracy + (your speed × this time). Direction never narrows it.

Yellow circle radius ≈ yellow base distance + full GPS accuracy + (your speed × this time). Warnings fire on corridor overlap.

Mirrored to the native background monitor via the same keys (lajos_mute_*, lajos_danger_*, lajos_severity_*).