proceeds the lock bar means 21 includes chassis strikable means defined by an inwardly reaching end thereof characterized as at 23 for making forceable contact with chassis structure characterized by the numeral 25 of the vehicle whereby moveof the vehicle is impeded as rotation of the wheel 13 is initiated although prevented also included is fastener lock means as at 27 for precluding unjustifiable movement of the arm means 15 17 from the closed position thereof as previously mentioned the lock bar means 21 includes the inwardly reaching end or chassis strikeable means 23 which reaches a predetermined distance inwardly or specifically beyond the inner side wall as at 29 of the wheel 13 additionally the lock bar means 21 includes an outer end as at 31 the significance of which will be disclosed below the inner arcuate arm means 15 is disposed substantially intermediate the lock bar means 21 and is fixedly attached thereto in any well known manner as by welding or the like for contiguous engagement with the inner side wall 29 of the wheel 13 the means 19 alluded to above for enabling the arms 15 17 to be opened preferably includes hingeplate means 33 hingedly attached as with a pivot pin 35 or the like at the outer end 31 of the lock bar means 21 thus this enables arms 15 17 to be opened or to facilitate installing the locking device 11 onto the wheel 13 i e the hingeplate means.