Determinants of Bicyclist Injury Severity Resulting from Crashes at Roundabouts, Crossroads, and T-Junctions

Table 6

Marginal effects for different bicycle crash injury severity levels at different intersections.

Variables	Roundabouts			Crossroads			T-junctions
	Fatal	Serious	Slight	Fatal	Serious	Slight	Fatal	Serious	Slight
Bicyclist characteristics
Male	−0.0003	−0.0145	0.0148	0.0007	0.0237	−0.0244	0.0003	0.0124	−0.0127
Age 1	−0.0022	−0.1149	0.1171	−0.0013	−0.0448	0.0461	−0.0009	−0.0384	0.0392
Age 2	−0.0018	−0.0927	0.0945	0.0020	−0.0584	0.0564	−0.0012	−0.0519	0.0531
Age 3	−0.0012	−0.0655	0.0667	−0.0016	−0.0562	0.0578	−0.0010	−0.0453	0.0463
Age 4	−0.0009	−0.0472	0.0481	−0.0008	−0.0269	0.0276	−0.0005	−0.0217	0.0222
Age 6	0.0007	0.0361	−0.0368	0.0060	0.0372	−0.0433	0.0045	0.0356	−0.0402
Villager							0.0023	0.0140	−0.0163
Part-of-work	−0.0005	−0.0288	0.0293				−0.0005	−0.0203	0.0208
To-from-Work							−0.0031	0.0073	−0.0042
Pupil-school							−0.0012	−0.0510	0.0521
Intersection characteristics
Speed-limit	−0.0008	−0.0405	0.0413	−0.0054	−0.0706	0.0760	−0.0041	−0.0590	0.0631
Junction-control	−0.0040	−0.0121	0.0161	−0.0034	−0.0065	0.0100	−0.0023	−0.0081	0.0103
Divider	0.0030	0.0034	−0.0064				0.0009	0.0412	−0.0422
Urban-junction	−0.0003	−0.0139	0.0142	−0.0011	−0.0394	0.0405	−0.0010	−0.0458	0.0469
Road-wet	0.0115	0.6092	−0.6207
Environmental condition
Weather-fine				−0.0010	−0.0369	0.0379
Weather-raining	−0.0022	−0.1179	0.1201	−0.0011	−0.0398	0.0409
Weather-foggy				0.0086	−0.0166	0.0080
Night-peak							−0.0002	-0.0102	0.0104
Night-light							0.0004	0.0165	−0.0169
Night-nonlight							0.0006	0.0269	−0.0275
February							0.0020	−0.0033	0.0013
May				0.0006	0.0199	−0.0204
June	−0.0005	−0.0270	0.0275
October				0.0006	0.0203	−0.0208
Bicyclist movement and location preceding the crash
Parked							0.0072	−0.1945	0.1872
Waiting-go				−0.0038	−0.1343	0.1381	−0.0025	−0.1116	0.1142
Righting							0.0004	0.0160	−0.0163
Waiting-right				−0.0033	−0.1162	0.1195	−0.0013	−0.0558	0.0570
Over-nearside	0.0065	−0.0094	0.0029	0.0076	−0.0101	0.0025	0.0038	−0.0157	0.0119
Ahead-right	0.0009	0.0455	−0.0463				0.0007	0.0301	−0.0307
Entering-main				0.0054	0.0241	−0.0295	0.0037	0.0295	−0.0332
Lane-left	0.0010	0.0504	−0.0513	0.0036	0.1288	−0.1324
Busway							0.0044	−0.0059	0.0015
Pavement	0.0014	0.0733	−0.0747				0.0041	0.0151	−0.0192
Type of collision
Collision-point-front				0.0020	0.0696	−0.0715	0.0014	0.0622	−0.0636
Collision-point-back	−0.0007	−0.0356	0.0363	−0.0032	−0.1140	0.1172	−0.0002	−0.0932	0.0934
Collision-point-right	0.0016	−0.0238	0.0222	0.0012	−0.0832	0.0820	0.0009	−0.0661	0.0651
Collision-point-left				0.0023	−0.0608	0.0585	−0.0018	−0.0803	0.0821
Secondary-collision-on-road							0.0010	0.0445	−0.0455
Secondary-collision-off-road	0.0021	0.1098	−0.1119	0.0019	0.0680	−0.0699	0.0052	0.0931	−0.0983