A motor-driven unit for mine clearing from and securing a hazardous route, of the type comprising anti-mine means and an equipment for beaconing the secured route comprising: - a tank containing a marking product; - members for dispensing the marking product, respectively arranged on both sides of the central longitudinal axis of said unit so as to implement lateral markings, the spacing of which corresponds at least to the largest path axle of the unit; and - motive means for bringing the marking product from said tank to said dispensing members, characterized: - in that it comprises: • a first leading vehicle carrying said beaconing equipment with lateral markings and the wheels (R1, R2) of which in at least one axle (14, 15) make up a part of a mass decoy equipment of said anti-mine means for securing longitudinal lanes (B1, B2) of said track through the passage of said wheels; and • at least one second follower vehicle being guided on said secured longitudinal lanes (B1, B2) by said first vehicle, said second vehicle being further provided with several axles (16, 17, 18, 19) with wheels making up the remainder of said mass decoy equipment, said axles having different paths therebetween and with said mass decoy axle of the first vehicle, so as to securing further longitudinal lanes (B3, B4, B5, B6), - in that, in addition to said side marking dispensing members, said beaconing equipment comprises a dispensing member arranged in the central longitudinal axis of said unit for implementing an axial marking of said route, on which is guided the follower vehicle in order to completely secure the width of the track delimited by said lateral markings, by juxtaposition of all said achieved longitudinal lanes (B1, B2, B3, B4, B5, B6), and - in that said marking product is liquid. - a tank containing a marking product; - members for dispensing the marking product, respectively arranged on both sides of the central longitudinal axis of said unit so as to implement lateral markings, the spacing of which corresponds at least to the largest path axle of the unit; and - motive means for bringing the marking product from said tank to said dispensing members, characterized: - in that it comprises: • a first leading vehicle carrying said beaconing equipment with lateral markings and the wheels (R1, R2) of which in at least one axle (14, 15) make up a part of a mass decoy equipment of said anti-mine means for securing longitudinal lanes (B1, B2) of said track through the passage of said wheels; and • at least one second follower vehicle being guided on said secured longitudinal lanes (B1, B2) by said first vehicle, said second vehicle being further provided with several axles (16, 17, 18, 19) with wheels making up the remainder of said mass decoy equipment, said axles having different paths therebetween and with said mass decoy axle of the first vehicle, so as to securing further longitudinal lanes (B3, B4, B5, B6), • a first leading vehicle carrying said beaconing equipment with lateral markings and the wheels (R1, R2) of which in at least one axle (14, 15) make up a part of a mass decoy equipment of said anti-mine means for securing longitudinal lanes (B1, B2) of said track through the passage of said wheels; and • at least one second follower vehicle being guided on said secured longitudinal lanes (B1, B2) by said first vehicle, said second vehicle being further provided with several axles (16, 17, 18, 19) with wheels making up the remainder of said mass decoy equipment, said axles having different paths therebetween and with said mass decoy axle of the first vehicle, so as to securing further longitudinal lanes (B3, B4, B5, B6), - in that, in addition to said side marking dispensing members, said beaconing equipment comprises a dispensing member arranged in the central longitudinal axis of said unit for implementing an axial marking of said route, on which is guided the follower vehicle in order to completely secure the width of the track delimited by said lateral markings, by juxtaposition of all said achieved longitudinal lanes (B1, B2, B3, B4, B5, B6), and - in that said marking product is liquid.