It shall be unlaw­ful for any per­son to will­ful­ly and unnec­es­sar­i­ly hin­der, obstruct, or delay, or will­ful­ly and unnec­es­sar­i­ly attempt to delay, hin­der, or obstruct any oth­er per­son in law­ful­ly dri­ving or trav­el­ing along or upon any high­way with­in the lim­its of Union Coun­ty, or offer for barter or sale mer­chan­dise on the high­way so as to inter­fere with the effec­tive move­ment of traffic.