County, City | Location | Treatment | Direction | Before Study | After Study | Statistical significance of t-test for 85th percentile speed at 95% confidence interval |
85th Percentile Speed, X1 (mph) | 85th Percentile Speed, X2 (mph) | |||||
Atchison | US-59 @ WCL | Colored Pavement | East | 54.8 | 55.3 | No (Speed Increased) |
Clark, Minneola | US-283, 0.125 miles South of S.C.L | Colored Pavement | North | 57.4 | 47.7 | Yes |
US-283, 0.125 miles North of N.C.L | Colored Pavement | South | 51.8 | 52.9 | No (Speed Increased) | |
Cowley, Winfield | US-77 @ 33rd St | Solar Speed Display | North | 56.8 | 56.4 | No |
Marion, Peabody | US-50 @ W.C.L | Solar Speed Display | East | 58.5 | 56.3 | Yes |
US-50 @ E.C.L | Solar Speed Display | West | 63.2 | 54.1 | Yes | |
Pottawatomie, St. George | US-24 @ Flush Road | Mobile Speed Trailer | West | 73.2 | 71.1 | Yes |
Sedgwick, Goddard | US-54 & 215th St | Mobile Speed Trailer | East | 69.1 | 58.8 | Yes |
Douglas | US-24@ N 2000/E 1400 Strs. Midland Jct | Optical Speed Bars | East | 45.2 | 45.2 | No |
West | 47.6 | 46.3 | No | |||
East-West | 46.8 | 45.9 | No | |||
Wallace | K-27, North curve approach | Optical Speed Bars | Combined NB/SB | 52.5 | 59.7 | No (Speed Increased) |
K-27, South curve approach | Optical Speed Bars | Combined NB/SB | 55.3 | 56.1 | No (Speed Increased) |