When an online ride-hailing driver receives a dispatched trip request via the app, what is the rule regarding accepting fares outside the platform (脱离平台私自议价)?

1. Drivers may bargain privately with passengers if both parties agree to avoid platform commission fees
2. Drivers are strictly prohibited from offline bargaining, setting private cash/direct transfer fares, or picking up passengers outside the platform dispatch system
3. Private fare negotiation is permitted if the destination exceeds 50 kilometers
4. Private cash settlement is allowed if the passenger cannot use smartphone mobile payments