A braking system for a rail vehicle, which braking system comprises: a brake actuator configured to receive a brake command (cmd B), and in response thereto produce an electric brake-force signal commanding a brake action, and a brake unit comprising first and second pressing members (211, 212) and a rotatable member being mechanically linked to at least one wheel of the rail vehicle, which brake unit is configured to receive the electric brake-force signal, and in response thereto cause the first and second pressing members (211, 212) to execute the brake action with respect to the rotatable member, wherein the brake unit further comprises: a gear assembly arranged to operate mechanically on the first and second pressing members (211; 212); and an electric motor configured to, in response to the electric brake-force signal, act on the gear assembly so as to cause the first and second pressing members (211; 212) to move towards or away from the rotatable member; and characterised in that the brake actuator is further configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) away from the rotatable member in response to a deicing criterion being fulfilled, wherein, if the deicing criterion is fulfilled, the brake actuator is configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) towards and away from the rotatable member in a vibrating movement pattern. a brake actuator configured to receive a brake command (cmd B), and in response thereto produce an electric brake-force signal commanding a brake action, and a brake unit comprising first and second pressing members (211, 212) and a rotatable member being mechanically linked to at least one wheel of the rail vehicle, which brake unit is configured to receive the electric brake-force signal, and in response thereto cause the first and second pressing members (211, 212) to execute the brake action with respect to the rotatable member, wherein the brake unit further comprises: a gear assembly arranged to operate mechanically on the first and second pressing members (211; 212); and an electric motor configured to, in response to the electric brake-force signal, act on the gear assembly so as to cause the first and second pressing members (211; 212) to move towards or away from the rotatable member; and characterised in that the brake actuator is further configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) away from the rotatable member in response to a deicing criterion being fulfilled, wherein, if the deicing criterion is fulfilled, the brake actuator is configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) towards and away from the rotatable member in a vibrating movement pattern. a gear assembly arranged to operate mechanically on the first and second pressing members (211; 212); and an electric motor configured to, in response to the electric brake-force signal, act on the gear assembly so as to cause the first and second pressing members (211; 212) to move towards or away from the rotatable member; and characterised in that the brake actuator is further configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) away from the rotatable member in response to a deicing criterion being fulfilled, wherein, if the deicing criterion is fulfilled, the brake actuator is configured to produce the electric brake-force signal in such a way that the brake action involves moving the first and second pressing members (211; 212) towards and away from the rotatable member in a vibrating movement pattern.