A helmet wearing encouraging system (1;1';16) comprising an electronic helmet component (2;2';2'') and an electronic vehicle component (3;3';3'') in wireless communication with each other. the electronic helmet component (2;2';2'') includes at least a helmet motion sensor and the electronic vehicle component (3;3';3'') includes at least a vehicle motion sensor. A helmet receiver member of the electronic helmet component (2;2';2'') is adapted to receive a vehicle motion signal from a vehicle transmitter member of the electronic vehicle component (3;3';3'') when the vehicle motion sensor detects motion of the vehicle (20), and/or a helmet motion signal from a helmet transmitter member when the helmet motion sensor detects motion of the helmet component, and/or a vehicle receiver member of the electronic vehicle component (3;3';3'') is adapted to receive a vehicle motion signal from a vehicle transmitter member of the electronic vehicle component (3;3';3'') when the vehicle motion sensor detects motion of the vehicle, and/or a helmet motion signal from a helmet transmitter member when the helmet motion sensor detects motion of the helmet component.