CA Primary Collision Factors by County for CA in 2021

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH	AI	AJ	AK	AL	AM	AN	AO	AP	AQ	AR	AS	AT	AU	AV	AW	AX	AY	AZ	BA	BB	BC	BD	BE	BF	BG	BH
1	Primary Collision Factors for All Injuries and Fatalities for California in 2021
2	Source: Transportation Injury Maping System
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4	Primary Collision Factor	Alameda	Alpine	Amador	Butte	Calaveras	Colusa	Contra Costa	Del Norte	El Dorado	Fresno	Glenn	Humboldt	Imperial	Inyo	Kern	Kings	Lake	Lassen	Los Angeles	Madera	Marin	Mariposa	Mendocino	Merced	Modoc	Mono	Monterey	Napa	Nevada	Orange	Placer	Plumas	Riverside	Sacremento	San Benito	San Bernardino	San Diego	San Francisco	San Joaquin	San Luis Obispo	San Mateo	Santa Barbara	Santa Clara	Santa Cruz	Shasta	Sierra	Siskiyou	Solano	Sonoma	Stanislaus	Sutter	Tehama	Trinity	Tulare	Tolumne	Ventura	Yolo	Yuba	Total
5	Unsafe Speed	2080	8	49	160	50	14	1048	39	158	967	18	105	114	21	925	123	81	32	12658	211	310	13	92	487	10	26	475	183	95	3839	535	33	3226	2620	95	3267	3774	806	1273	295	691	478	2047	254	185	6	62	543	445		116	72	13	428	52	829	279	113	46928
6	Improper Turning	1102	10	37		76	75	606	36	131	642	50	147	160	54	854	114	102	46	5914	170	127	41	102	337		32	274	129	121	1476	277	25	1947	1367	50	2024	2571	443	644	242	420	349	916	177	176	4		389	331	499	108	100	51	383	116	598	204	120	27496
7	Automobile Right of Way	659	1	21	118	26	7	293	25	56	630	14	55	78	9	619	116	39	6	5993	111	65	7	27	320		3	269	82	38	2050	215	5	1326	1164	35	1591	1570	263	607	176	228	258	584	134	94		9	239	197	619	73	48	2	331	37	689	107	63	22401
8	Driving or Bicycling Under the Influence of Alcohol or Drug	468	2	48	141	46	34	291	16	118	383	28	82	56	12	503	83	59	12	3379	130	84	8	81	183	7	8	214	79	80	1209	190	20	1129	749	38	987	1236	152	477	144	172	240	381	163	117		37	219	273	387	77	45	21	246	53	361	125	51	15934
9	Traffic Signals and Signs	731		2	73	3	2	269	1	29	381	4	34	51	5	450	77	16	1	3664	42	42	1	8	120	1		97	37	7	1335	134	4	1031	951	17	1183	1097	405	383	59		126	566	52	53		1	163	69	392	47	10	2	214	6	366	64	16	14894
10	Unsafe Lane Change	364			21		2	248		2	112	2	8	9	1	74	14	7		2305	8	25	1		58		1	39	5	11	480	67		355	424	4	471	463	140	169	20	83	31	220	28	17			94	42	91	12	7		25	1	62	40	11	6674
11	Unknown	159		1	24		1	80		4	86		9	7		44	10	3	1	1468	10	15		8	35			28	20	9	430	45		140	163	5	236	417	156	45	23	54	67	197	17	24	1	4	18	21	51	12	6		35	5	88	19	7	4308
12	Pedestrian Violation	102		1	18	2		53	3	1	112	1	14	20	2	151	6	8	1	1192	15	11		5	40			42	6	4	284	20		211	216	3	290	367	139	65	27	37	34	115	22	15		1	33	23	68	6	6	1	45	4	62	13	11	3928
13	Wrong Side of Road	141		41	51	19	2	67	5	35	89	4	16	14	1	107	17	13	5	790	17	24	3	19	48		1	50	34	20	232	59	4	209	169	13	276	256	72	107	27	42	38	132	41	45		9	46	64	107	19	12	7	64	17	66	46	11	3823
14	Pedestrian Right of Way	214		1	8	1	1	69		2	35	1	9	9	2	41	10	4		1150	7	35		2	18			48	15	1	241	13	1	87	79	1	96	240	209	54	22	89	29	130	38	9			26	29	67	8	4	3	18	1	69	15	5	3266
15	Other Than Driver (or Pedestrian)	125		10	12	2	1	74	3	16	49	4	14	9	5	64	5	10	13	512	11	21		12	26	4	8	31	13	15	162	27	12	171	97	1	146	201	56	64	31	38	44	57	41	23	2	18	49	31	48	10	11	2	26	7	46	15	14	2519
16	Following Too Closely	107		1	16			41		3	28		9	1		20	3	6		755	5	9		5	15			29	4	3	93	14		62	28	1	83	240	106	42	9	32	16	83	11	1			44	42	80	2			10	2	83	10	1	2155
17	Unsafe Starting or Backing	82			6	1		39	1	2	27	1	4	3		41	12	9		558	4	21	1		19			31	8	4	132	20	2	112	84	4	82	180	64	28	10	46	52	71	13	1		2	16	16	44	4			22	3	60	7	5	1954
18	Other Hazardous Violation	57		1	11			24		5	14	1		1	1	20	4	2		287		12		2	9			10		2	70			53	67	1	58	141	102	18	9	29	20	45	1	8			10	3	79	5		1	13	4	20	4	1	1225
19	Improper Passing	28	1	1	3	1		18		4	19		2	5	1	39	2	4		236	3	11		1	14	26		12	7	2	39	6	3	60	28	4	89	84	45	27	5	23	14	27	12	7		2	15	11	30	6	2	1	21	4	23	10	1	1039
20	Other Improper Driving	24	1		2	2	2	16	1	5	13		5		1	11				139	1	5		2	6	1	1	11	11	4	51	3		48	26	3	32	208	20	15	4	6	8	21	4	11		1	14	11	7		2		5		20	2	1	787
21	Hazardous Parking							3		2	1					2				17							1	1			12	1		5	4		10	13	4	1	2	1	1	3	3					4	4						1			96
22	Impeding Traffic	4					1	1			1			1		1	1			15		1						1		1	8	2		9	1		14	8	3	3		2	1	4					2		3	1			2		2			93
23	Other Equipment	2									3		1	1		3				20					4			3		2	6	2		5	2		6	2	3				1	4	1			1	1	2	1	1					2			79
24	Brakes																			6		1							1		1		1	2	2	1	2	3	1	1				1																23
25	Lights										1					1	1			5								1						1	1		1					2		2		1									1		2			20
26	Fell Asleep																			2																																								2
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