or forming a median strip between opposing roadway sections the barriers including a number of skid assemblies resting without attachment on a supporting surface adjacent a roadway connected by a plurality of semi rigid vehicle barrier interface members extending longitudinally of the roadway application_number US 69191896 A description referring now more particularly to the drawings and especially to fig1 3 the barrier of the present invention comprises a plurality of skid assemblies each indicated generally at 20 connected by one or more rails or beams 22 in a typical installation the barrier extends along the side of a roadway 24 with the individual skid assemblies disposed parallel to one another and normal to the direction of the roadway the spacing between the skid assemblies will vary depending upon the site conditions the type of roadway the type of vehicular traffic and the anticipated speeds typically it is expected that the spacing between adjacent skid assemblies will be 12 to 24 feet the individual skid assemblies are of essentially open framework design and may be constructed of steel or aluminum in tube beam plate or cast configurations a typical example being shown in fig3 as illustrated there the assembly comprises a lower skid member 26 having a portion resting on the ground and a forward portion offset to prevent wheel snagging and to provide a mounting area 28 to which the rails or beams 22 are bolted in the embodiment shown in fig3 and 4 the rail is the standard w beam now in widespread use on highways however one or more aluminum tubes of the type used in bridge railing or other dedicated shapes in aluminum or steel may also be employed the bottom flat portion of the skid member 26 rests without attachment.