Pole for traffic signalling presenting: - a pole part provided in a generally elongated shape of tubular type, and - a base part provided in a generally non elongated shape, and adapted to be fixed to the pavement and to be associated with said pole part, whereby said pole and base parts (11, 12) are adapted to mutually engage in an engagement position and be retained at a retention position with reference to an engagement axis, whereby the engagement axis coincides at least approximately with the central longitudinal axis of said pole part, whereby said pole and base parts (11, 12) present engagement parts (112, 122), provided in respective directly opposing parts and adapted to provide engagement and removable retention by means of a movement along said engagement axis and a movement around said engagement axis, of said pole part in relation to said base part whereby said engagement parts comprise first engagement parts (111, 121) and second engagement parts (112, 122) adapted to provide engagement and removable retention by means of said movement along said engagement axis, and said movement around said engagement axis characterized in that at least one of said pole and base parts (11, 12) presents a tooth element, as part of said second engagement parts (112, 122), configured as a projection that develops along a direction at least approximately parallel to said engagement axis and adapted for engaging in a corresponding cavity of the other of said pole and base parts (11, 12), and in that at least one of said pole and base parts (11, 12) presents an elastic tongue disposition associated with said cavity, as part of said second engagement parts, 122) and configured to be pressed in deflexion downwards by said tooth element, in the rotation movement of said pole part with relation to said base part, and in that said tooth element can be inserted in the cavity so that said tooth element is retained blocked in said cavity by said elastic tongue disposition. - a pole part provided in a generally elongated shape of tubular type, and - a base part provided in a generally non elongated shape, and adapted to be fixed to the pavement and to be associated with said pole part, whereby said pole and base parts (11, 12) are adapted to mutually engage in an engagement position and be retained at a retention position with reference to an engagement axis, whereby the engagement axis coincides at least approximately with the central longitudinal axis of said pole part, whereby said pole and base parts (11, 12) present engagement parts (112, 122), provided in respective directly opposing parts and adapted to provide engagement and removable retention by means of a movement along said engagement axis and a movement around said engagement axis, of said pole part in relation to said base part whereby said engagement parts comprise first engagement parts (111, 121) and second engagement parts (112, 122) adapted to provide engagement and removable retention by means of said movement along said engagement axis, and said movement around said engagement axis characterized in that at least one of said pole and base parts (11, 12) presents a tooth element, as part of said second engagement parts (112, 122), configured as a projection that develops along a direction at least approximately parallel to said engagement axis and adapted for engaging in a corresponding cavity of the other of said pole and base parts (11, 12), and in that at least one of said pole and base parts (11, 12) presents an elastic tongue disposition associated with said cavity, as part of said second engagement parts, 122) and configured to be pressed in deflexion downwards by said tooth element, in the rotation movement of said pole part with relation to said base part, and in that said tooth element can be inserted in the cavity so that said tooth element is retained blocked in said cavity by said elastic tongue disposition.