County, City | Location | Treatment | Direction | Before Study | After Study | Statistical significance of t-test for mean speed at 95% confidence interval |
Mean Speed, X1 (mph) | Mean Speed, X2 (mph) | |||||
Atchison | US-59 @ WCL | Colored Pavement | East | 51.1 | 50.7 | No |
Clark, Minneola | US-283, 0.125 miles South of S.C.L | Colored Pavement | North | 48.8 | 42.4 | Yes |
US-283, 0.125 miles North of N.C.L | Colored Pavement | South | 46.6 | 47.8 | No (Speed Increased) | |
Cowley, Winfield | US-77 @ 33rd St | Solar Speed Display | North | 53.2 | 51.5 | Yes |
Marion, Peabody | US-50 @ W.C.L | Solar Speed Display | East | 54.9 | 51.8 | Yes |
US-50 @ E.C.L | Solar Speed Display | West | 57.3 | 50.2 | Yes | |
Pottawatomie, St. George | US-24 @ Flush Road | Mobile Speed Trailer | West | 69.8 | 67.3 | Yes |
Sedgwick, Goddard | US-54 & 215th St | Mobile Speed Trailer | East | 62.4 | 55.3 | Yes |
Douglas | US-24@ N 2000/E 1400 Strs. Midland Jct | Optical Speed Bars | East | 42.2 | 41.3 | No |
West | 43.9 | 40.8 | Yes | |||
East-West | 43.1 | 41 | Yes | |||
Wallace | K-27, North curve approach | Optical Speed Bars | Combined NB/SB | 47.8 | 52.9 | No (Speed Increased) |
K-27, South curve approach | Optical Speed Bars | Combined NB/SB | 47.8 | 49.2 | No |