If the project or sub­di­vi­sion is to be devel­oped with­in one thou­sand (1,000) feet of the cen­ter line of an exist­ing or planned high­way, with a fif­teen (15) year pro­ject­ed Aver­age Dai­ly Vol­ume in excess of two thou­sand (2,000) vehi­cles, con­sid­er­a­tion must be giv­en to the rela­tion­ship between high­way traf­fic noise and the pro­posed devel­op­ment. In order to alle­vi­ate exces­sive high­way noise impacts, the Plan­ning Com­mis­sion, in con­sul­ta­tion with the Illi­nois Depart­ment of Trans­porta­tion, may require the devel­op­er to con­form with addi­tion­al set­back require­ments or pro­vide ade­quate buffer­ing.