Reminder light / Light

Although riding bikes is great for public transportation, turning may cause road users trouble because of the lack of signals warning that a bike is turning. According to the traffic regulations, bike riders must give prompt signals before turning.
This design provides for customary use GPS route for planning.
It combines phone GPS and bike tail lights.
It can plan cycling routes.
Bluetooth connects phone with tail lights.
Thirty meters before turning, the signal light automatically appears to indicate the direction of turning.