成都地区加装侧爬梯合法吗？

<div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g32/M07/18/D2/userphotos/2024/10/15/00/500_ChxkPWcNQfqAeFRkAATGjzzRThI389.jpg" style="height:1600px;width:1200px"  /></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g32/M09/18/D2/userphotos/2024/10/15/00/500_ChxkPWcNQfqAeNORAAbI5oCOVsg823.jpg" style="height:645px;width:860px"  /></div><div layer1="img-e"></div><br /><div layer1="text-s"></div><div class="tz-paragraph">刚提车想改改车顶平台和侧边爬梯，想问问改过的豹友</div><div layer1="text-e"></div><br />