will be defined between the central region of the dowel bars and the adjacent concrete due to the existence of the resilient jackets 40 as the highway sections 44 and 46 longitudinally expand the oblique orientation of the joints 42 will cause the sections to be laterally displaced relative to each other a tongue and groove relationship between the sections 44 and 46 results from the v shaped configuration of the divider plate 14 and together with the dowel bars will prevent the joint sections from being relatively vertically displaced during such lateral deflection and the lateral deflection will produce a deflection within the central region 38 of the dowel bars 36 as will be appreciated from fig8 of course the deflection illustrated in fig8 is magnified for purpose of illustration the dowel bars 36 impose a biasing force on the highway sections 44 and 46 endeavoring to realign the sections such that during contraction of the sections as the temperature decreases the biasing force imposed upon the sections by the dowel bars realigns the sections and assures that the joint 42 will not 34 open 34 due to the presence of the yieldable jackets 40 defining a 34 clearance 34 between the central region of the dowel bars and the concrete the central regions of the dowel bars are free to deflect in the intended manner so as to provide the desired biasing action however a sufficient portion of the end regions of the dowel bars is embedded in the concrete to securely anchor the dowel bars to their respective highway sections.