Driver on I26 headed east in North Charleston driver was in center lane tried to change lanes to the right. I was in this lane white Nissan Quest no blinker and stated to move into this lane. The truck then weeved back into center lane then again started to move into my lane was over the white line no blinker I moved back and then he placed his blinker on and moved into the right lane. The number on the truck was 8356 on the back of the truck. I had my lights on and this was around 6-7 a.m. I had to back away so that he would not hit me and I had to move over to emergency lane both times.