Determinants of Bicyclist Injury Severity Resulting from Crashes at Roundabouts, Crossroads, and T-Junctions
Table 3
Estimation results of the GOL model.
Variables
Roundabouts
Crossroads
T-junctions
Fatal
Serious
Fatal
Serious
Fatal
Serious
Bicyclist characteristics
Male
0.100 (0.052)
−0.169 (0.063)
−0.088 (0.033)
Age 1
0.804 (0.132)
0.32 (0.105)
0.298 (0.053)
Age 2
0.652 (0.071)
0.389 (0.084)
0.38 (0.043)
Age 3
1.46 (0.585)
0.461 (0.062)
0.398 (0.080)
0.324 (0.041)
Age 4
0.330 (0.060)
0.191 (0.082)
0.154 (0.041)
Age 6
−0.25 (0.066)
−1.306 (0.495)
−0.305 (0.096)
−1.501 (0.280)
−0.279 (0.048)
Villager
−0.675 (0.246)
−0.111 (0.057)
Part-of-work
0.202 (0.074)
0.15 (0.052)
To-from-work
1.012 (0.370)
Pupil-school
0.366 (0.098)
Intersection characteristics
Speed-limit
0.331 (0.048)
0.944 (0.409)
0.529 (0.097)
1.239 (0.231)
0.441 (0.047)
Junction-control
1.613 (0.437)
0.967 (0.342)
0.723 (0.235)
Divider
−1.053 (0.402)
−0.958 (0.394)
−0.29 (0.076)
Urban-junction
0.278 (0.099)
0.45 (0.246)
0.321 (0.042)
Environmental condition
Weather-fine
0.266 (0.125)
Weather-raining
0.188 (0.066)
0.291 (0.146)
Night-peak
0.071 (0.032)
Night-light
−0.122 (0.033)
Night-nonlight
−0.195 (0.074)
February
−0.701 (0.266)
May
−0.14 (0.084)
June
0.19 (0.080)
October
−0.142 (0.079)
Bicyclist movement and location preceding the crash
Parked
−1.971 (1.068)
1.354 (0.600)
Waiting-go
0.889 (0.277)
Righting
−0.234 (0.089)
−0.494 (0.248)
−0.113 (0.051)
Waiting-right
0.764 (0.377)
0.418 (0.122)
Ahead-right
−0.446 (0.106)
−0.24 (0.073)
Over-nearside
−2.928 (0.907)
−1.241 (0.404)
Lane-left
−0.483 (0.212)
Approaching-parked
1.523 (0.606)
Leaving-parked
−0.825 (0.256)
−0.09 (0.046)
Entering-main
−1.038 (0.400)
−0.206 (0.110)
−1.149 (0.281)
−0.182 (0.057)
Busway
−1.387 (0.768)
Pavement
−0.534 (0.298)
−1.35 (0.615)
Type of collision
Collision-point-front
0.51 (0.115)
0.422 (0.055)
Collision-point-back
0.234 (0.057)
0.804 (0.144)
0.652 (0.070)
Collision-point-right
0.15 (0.063)
0.576 (0.122)
0.444 (0.060)
Collision-point-left
0.416 (0.128)
0.544 (0.063)
Secondary-collision-on-road
−0.264 (0.067)
Secondary-collision-off-road
−0.78 (0.248)
−0.482 (0.278)
−1.491 (0.405)
−0.679 (0.125)
Constant
4.394 (0.784)
0.957 (0.132)
2.746 (1.325)
−0.04 (0.208)
4.339 (0.542)
0.227 (0.088)
Number of observations
16418
11,623
14491
Log-likelihood at zero, LL (0)
−7800.35
−5544.79
−6810.67
Log-likelihood at convergence, LL (β)
−6817.51
−4823.41
−5932.77
Pseudo R2
0.1260
0.1301
0.1289
AIC
15684.71
11189.57
13662.38
BIC
16008.36
11557.61
13989.59
Note. Standard errors are in parentheses. Level of significance: ∗ indicates parameter is significant at 0.05, ∗∗ indicates parameter is significant at 0.01, and ∗∗∗ indicates parameter is significant at 0.001.
