(a) Roads with safety edge treatments with lane widening | ||||||
Road Name | Other treatments | Data of implementation | Segment length (miles) | AADT (vehicles per day) | ||
Lane widening 12 ft to 13 ft | Lane widening 12 ft to 14 ft | Mean (SD) | Before Mean (SD) | After Mean (SD) | ||
K-23 from Lane County | No | Yes | 2010 | 1.02 (1.745) | 826 (501) | 884 (253) |
K-23 to US 83/K 383 junction | No | Yes | 2012 | 1.58 (2.32) | 640 (253) | 633 (281) |
K 25 from Russell Spring | Yes | No | 2012 | 1.67 (3.19) | 200 (18) | 234 (15) |
(b) Roads with adding 2 ft paved shoulders with asphalt resurfacing and/or shoulder rumble strips | ||||||
| Other treatments | Data of implementation | Segment length (miles) | AADT (vehicles per day) | ||
Asphalt resurfacing | Shoulder rumble strips |
| Mean (SD) | Before Mean (SD) | After Mean (SD) | |
US-5 DK/MR Counties | Yes | No | 2013 | 0.629 (1.388) | 1.032 (230) | 1.017 (224) |
K-156 | No | No | 2014 | 1.195 (1.535) | 1.718 (495) | 1.140 (374) |
US-56 Counsel Groove | Yes | No | 2013 | 0.592 (1.339) | 1.859 (179) | 1.752 (113) |
K-99 NCL of Alma | Yes | No | 2013 | 0.4808 (0.883) | 2.673 (2.049) | 2.772 (2.242) |
US-81 | No | No | 2013 | 0.540 (0.923) | 3.759 (625) | 3.971 (812) |
K-2/K-42 | No | Yes | 2014 | 0.736 (1.029) | 2.421 (91) | 1.555 (30) |
K-42 Sumner and Sedgwick Counties | No | Yes | 2012 | 0.6131 (0.451) | 3.091 (34) | 3.481 (119) |
US-81Sumner county | No | No | 2011 | 0.628 (0.605) | 4.296 (1.966) | 4.979 (1.710) |
K-196 Harvey county | No | Yes | 2012 | 1.602 (0.940) | 5.757 (4.556) | 6.121 (4.790) |
K-1 Comanche county | Yes | Yes | 2013 | 1.336 (1.275) | 713 (57) | 660 (55) |
K-130 | No | No | 2013 | 0.339 (0.510) | 1.230 (141) | 1.154 (159) |
US-160 | No | Yes | 2013 | 1.483 (1.842) | 1.192 (743) | 1.203 (671) |