2004 I/M Program Annual Report and 2003-04 Biennial Report - Appendix E

Table 1: Summary of Emission Reductions from Transient Tests
(Based on Data Collected from 1/1/2004 to 12/31/2004)
Model Year	Light Duty Vehicles				Light Duty Trucks
	Failed Vehicles	Average g/mi Emission Reductions			Failed Vehicles	Average g/mi Emission Reductions
	Failed Vehicles	HC	CO	NOx	Failed Vehicles	HC	CO	NOx
1981	554	1.36	22.96	1.51	52	2.29	29.25	4.13
1982	672	1.30	17.41	1.93	74	1.67	21.55	3.27
1983	1,162	1.12	18.26	1.85	126	2.03	27.51	3.49
1984	1,971	1.00	17.52	1.83	339	1.78	29.96	2.29
1985	3,134	1.14	16.96	1.94	538	2.16	30.06	2.66
1986	4,367	0.98	15.89	1.79	737	2.21	26.43	2.84
1987	6,371	1.04	14.14	1.81	1,132	1.84	23.07	2.74
1988	7,051	1.03	14.81	1.74	2,393	1.40	16.72	2.64
1989	8,429	1.03	15.20	1.72	2,728	1.35	18.54	2.62
1990	11,041	0.87	13.06	1.89	2,694	1.34	18.39	2.49
1991	10,073	0.80	12.88	1.80	2,521	1.28	19.18	2.40
1992	10,727	0.87	15.29	1.74	3,149	1.41	20.01	2.47
1993	10,810	0.85	12.21	1.81	3,708	1.16	15.04	2.56
1994	7,376	0.91	12.35	1.61	3,608	1.18	14.92	2.54
1995	6,925	0.88	13.66	1.50	3,850	1.27	13.23	2.55
1996	6,392	0.57	10.95	1.19	4,821	0.58	8.93	1.83
1997	5,867	0.59	12.62	1.14	3,692	0.65	10.92	1.77
1998	4,065	0.57	13.08	1.06	2,463	0.60	10.15	1.84
1999	3,150	0.58	13.09	1.12	1,763	0.61	8.32	1.76
2000	2,509	0.48	11.01	1.22	1,163	0.51	12.61	1.12
2001	1,053	0.50	10.93	0.94	828	0.49	12.87	0.81
2002	646	0.35	9.91	0.89	437	0.57	10.49	0.90
Total	114,345	0.85	13.69	1.63	42,816	1.09	15.03	2.24

Table 2: Summary of Emission Reductions from Idle Tests
(Based on Data Collected from 1/1/2004 to 12/31/2004)
Model Year	Light Duty Vehicles			Light Duty Trucks
	Failed Vehicles	Average g/mi Emission Reductions		Failed Vehicles	Average g/mi Emission Reductions
	Failed Vehicles	HC (ppm)	CO (%)	Failed Vehicles	HC (ppm)	CO (%)
1979	130	310	3.01	32	282	2.69
1980	141	303	2.86	27	194	2.95
1981	1	133	2.41	29	305	2.36
1982	2	541	9.43	31	515	2.62
1983	4	264	4.09	53	456	2.79
1984	14	147	2.90	80	679	2.50
1985	15	180	1.50	102	358	2.74
1986	32	243	2.55	183	508	2.52
1987	44	234	1.79	153	333	2.10
1988	48	264	1.94	179	369	1.84
1989	65	233	1.74	174	349	2.11
1990	90	225	1.57	146	416	2.11
1991	111	181	1.13	185	306	2.27
1992	131	233	1.50	191	319	2.04
1993	148	231	1.17	258	331	2.10
1994	134	194	0.71	317	353	1.81
1995	170	174	0.86	378	364	1.55
1996	81	127	1.14	184	247	1.47
1997	141	175	0.92	251	256	1.29
1998	134	106	0.71	220	177	1.17
1999	183	126	2.01	252	158	0.88
2000	153	71	0.44	208	105	0.57
2001	134	26	0.20	227	79	0.38
2002	199	12	0.05	280	20	0.15
Total	2,305	167	1.27	4,140	283	1.58