SignaCar

Someone left their lights on. A car is blocking your exit. You notice a flat tyre. How do you reach the driver?

With SignaCar, just enter their license plate number and send an instant alert — they'll get a push notification on their phone within seconds.

HOW IT WORKS

Enter the driver's license plate number
Pick from a list of common alerts (lights on, flat tyre, blocking exit, and more)
The driver receives an instant push notification
That's it. No phone number needed. No note on the windshield. No waiting around.

KEY FEATURES

Instant push notifications — alerts arrive in seconds
Anonymous by default — your identity is never revealed
No account needed to send — anyone can alert a registered driver, even from the web
Two-way messaging — registered drivers can reply and start a private conversation
Karma system — build your reputation as a helpful driver in the community
Plate scanner — use your camera to scan a license plate instead of typing it
Ghost alerts — if the driver isn't on SignaCar yet, your alert will be waiting for them when they sign up
Block & report — stay in control of who can reach you
COMMON ALERTS

Parking: blocking my exit, parked on my spot, your vehicle is being towed
Vehicle issues: lights on, flat tyre, trunk open, window left open, door not closed
Safety: you dropped something
General: thank you!

BUILT FOR DRIVERS, BY DRIVERS

SignaCar bridges the gap between drivers who have no way to communicate. Whether you're helping a stranger or reaching someone blocking your driveway — it takes two seconds and costs nothing.

Your plate number is your identifier. Register it once and you're reachable by any driver, anywhere.

PRIVACY FIRST

Alerts are anonymous by default
No location tracking
No ads
You control who can message you
Block any plate instantly
Delete your account and all data at any time
Free to use. Free to send.