Placement of G20-1 signs

MUTCD subsection 6F-1 c.(2) states that the G20-1 sign “…should be used in advance of any temporary traffic control zone of more than 2 miles in length,” and subsection 6C-2 says “The temporary traffic control zone includes the entire section of roadway between the first advance warning sign through the last traffic control device….” Kansas DOT interprets the wording to mean G20-1 signs should be located in advance of the first warning signs, which may be as much as 1 or 2 miles in advance of any physical work taking place on the roadway (depending upon the number and spacing of the advance warning signs). Therefore, in Kansas, the first orange sign encountered on approach to a work zone in excess of 2 miles in length is normally a G20-1 sign.