Bike Guardian

Situation warnings now require tracked closing motion. One evidence-backed event drives the visual, spoken, and haptic cue.

Bike Guardian turns the phone already on your handlebars into a cyclist-assistance companion.

SITUATION WARNINGS

• Object boxes are context, not warnings.
• A rider warning requires a tracked vehicle that is measurably closing over time.
• Visual, spoken, and haptic feedback share one typed situation identity.
• Uncertain car, truck, bus, or motorcycle subclasses are conservatively called vehicle.

REAR GUARD

• Uses your phone cameras to watch the road behind while you watch the road ahead.
• Warns with "vehicle approaching behind" or "fast vehicle approaching behind" only after temporal closing evidence.
• Supports handlebar and seatpost mounting on devices with simultaneous front and back camera capture.

LOCAL EVIDENCE

• Warning transitions and numerical evidence are stored locally.
• Possible pass events inferred from image motion remain explicitly unverified.
• Unverified pass candidates never become automatic community map facts.
• Raw video sharing is off unless you explicitly opt in.

IMPORTANT Bike Guardian is a rider-assistance tool, not autonomous control. It does not replace your attention, judgment, or local traffic law. Silence is not proof that the road is clear.