MethodologyA qualitative survey was conducted at two locations along Interstate 55, at gas stations at Exits 129 and 91 during August 2010. Between the two locations, 198 surveys were collected to…
MethodologyIn order to determine the effectiveness of DMS messages on travel speeds in work zones on rural, uncongested four-lane interstates, two forty foot long virtual speed traps were set up to…
On August 16-18, 2011, the Illinois DOT closed the I-57 bridge over the Mississippi River, between Missouri and Illinois for three full days to enable the contractor to efficiently make repairs.…