Chapter 21.10 FENCE, HEDGE AND VISION OBSTRUCTION REGULATIONS This chapter is included in your selections. Sections: 21.10.050 Purpose. 21.10.100 Fence and hedge standards. 21.10.200 Electric fences. 21.10.300 Barbed wire fences. 21.10.400 Vision obstruction by signs along public streets. 21.10.900 Exceptions.