Illinois typically uses Design Standards 701400 and 701446 to divert three lanes of traffic into one. If there is not a time of day when traffic volumes would allow a single lane open, the shoulder … [Read more...] about Center lane closure
Illinois
Changing light bulbs on overhead signs
In Illinois, contractors are given the option of working over a traffic lane or closing the lane. All of their contractors prefer working over a closed lane. State specifications are very strict … [Read more...] about Changing light bulbs on overhead signs