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Table 11. Relative Standard Errors for Table 1

Selected Characteristics	Total Fleets	10- 19 Vehicles	20-49 Vehicles	50 or More Vehicles
Total Number of Fleets	0	0	2	11
SIC Codes
Ag./For./Fish.	16	25	226	509
Mining	56	90	97	763
Construction	19	26	23	73
Manufacturing	38	74	162	56
Trans./Com./Utilities	22	40	30	55
Wholesale Trade	26	34	39	128
Retail Trade	29	42	35	112
Fin./Ins./Re.	46	56	283	NC
Services	18	30	21	74
Number of Denver Operating Locations
1	6	4	15	28
2 to 5	21	44	27	35
6 to 10	44	25	116	382
11 to 20	40	58	75	88
Over 20	51	96	226	382
No Answer	33	NC	NC	509
Percent of Vehicles Parked/Stored at Each Type of Facility Used (more than one may apply)
Company Site
1-74	14	24	24	53
75-100	5	9	5	19
Employees' Homes
1-74	17	28	22	34
75-100	20	32	29	87
Other
1-74	25	31	102	66
75-100	20	41	73	255
No Answer	22	57	226	1524
Vehicle Type (more than one may apply)
Passenger Cars	9	13	15	18
Small Pickup Trucks	12	20	22	26
Large Pickup Trucks	10	13	12	24
Minivans	14	29	10	29
Full-Size Vans	13	21	15	29
Sport/Utility Vehicles	10	17	16	22
Light Trucks/Step Vans	13	29	15	27
Medium Trucks	14	21	22	24
Heavy Trucks	13	28	23	20
All Buses	29	46	65	153
Fuel Type (more than one may apply)
Gasoline Vehicles	1	1	2	15
Diesel Vehicles	11	20	14	17
Alternative-Fuel Vehicles	27	28	64	42
Median-Vehicle Age (gasoline and diesel vehicles)
Less than 4 Years	9	17	15	19
4 to 6 Years	16	25	27	36
More than 6 Years	21	33	34	170
No Answer	45	23	69	429
Typical Method Used to Purchase--75 Percent or More of--Each Conventional--Gasoline and Diesel--Fuel Used
One Typical Method Used
Company Provides One or Both Fuels--if Both are Used	20	34	38	70
Private Sites Used for One or Both Fuels --if Both are Used	25	35	41	1524
Public Service Stations with a Fleet Credit Card for One or Both Fuels --If Both are Used	11	15	17	50
Public Service Stations Without A Fleet Credit Card for One or Both Fuels--If Both Fuels are Used	31	44	53	122
No Typical Method Used
Both Fuels Used--But Company Provides Only One	19	45	58	90
Other	32	32	73	46
No Answer	23	23	68	181
Percent of Gasoline Purchased at Each Type of Refueling Facility Used (more than one may apply)
Company-Owned Sites
1-74	28	54	376	170
75-100	17	24	36	54
Private Sites with Fuel-Purchase Agreements
1-74	15	28	283	255
75-100	25	35	39	509
Public Service Stations with Fuel-Purchase Agreements
1-74	30	41	61	73
75-100	9	14	15	27
Public Service Stations Without Fuel-Purchase Agreements
1-74	25	45	61	91
75-100	27	42	36	96
No Answer	80	87	1126	NC
Percent of Diesel Purchased at Each Type of Refueling Facility Used (more than one may apply)
Company-Owned Sites
1-74	63	40	95	128
75-100	12	33	31	37
Private Sites with Fuel-Purchase Agreements
1-74	28	51	564	509
75-100	35	42	69	79
Public Service Stations with Fuel-Purchase Agreements
1-74	44	58	77	139
75-100	19	32	29	71
Public Service Stations Without Fuel-Purchase Agreements
1-74	33	78	87	170
75-100	13	26	76	763
No Answer	80	57	1126	186
Percent of Alternative Fuel Purchased at Each Type of Refueling Facility Used (more than one may apply)
Company-Owned Sites
1-74	41	NC	1126	1524
75-100	20	40	226	89
Private Sites with Fuel-Purchase Agreements
1-74	41	NC	1126	1524
75-100	26	NC	376	763
Public Service Stations with Fuel-Purchase Agreements
1-74	33	57	NC	763
75-100	53	93	126	71
Public Service Stations Without Fuel-Purchase Agreements
1-74	57	NC	1126	NC
75-100	57	NC	1126	NC
No Answer	NC	NC	NC	NC
Any Regular Day or Time that Vehicles are Refueled
No	5	8	9	13
Yes, Regular Tme of Day
A.M.	32	31	72	191
P.M.	20	26	46	139
Yes, Regular Day	25	57	376	1524
No Answer	59	62	1126	763
Any Limitations on Using Public Service Stations That Offer Alternative-Fuel (fleets that did not report using public service stations for either gasoline or diesel )
Yes	28	40	79	205
No	25	38	33	78
No Answer	71	77	1126	763
Percent of Vehicles Leased
None	7	13	8	27
1 to 19	27	53	44	191
20 to 39	33	74	126	219
40 to 59	39	61	72	115
60 to 79	16	25	283	382
80 to 100	21	31	33	60
No Answer	67	93	564	142
Retirement Policy For Owned Vehicles (fleets that purchase vehicles)
Age	18	28	29	60
Mileage	12	19	22	43
When No Longer Functional	26	38	37	73
Other	32	43	54	85
No Answer	47	90	137	73
Disposal Policy for Owned Vehicles (fleets that purchase vehicles)
Sell to Individuals	36	52	72	139
Sell to Brokers	25	32	49	73
Trade to Brokers	19	31	31	103
Sell for Scrap	13	20	24	32
Other	33	73	69	131
No Answer	43	57	90	131
Disposal Policy for Leased Vehicles (more than one may apply/ fleets that lease vehicles)
Return to Leasing Company	19	36	30	41
Sell or Trade to Brokers	26	48	50	51
Sell to Individuals	34	53	57	71
Put in Own Fleet	20	34	35	51
Sell for Scrap	58	33	283	79
No Answer	46	57	162	122
Days of Operation per Year
1 to 73	90	90	NC	NC
74 to 146	58	NC	1126	NC
147 to 219	38	26	87	88
220 to 292	8	10	14	33
293 to 366	15	31	22	21
No Answer	80	88	1126	NC
Percent of Travel Outside Denver Area
0 to 20	7	7	14	26
21 to 40	22	23	37	56
41 to 60	36	51	46	128
61 to 80	52	33	97	219
81 to 100	36	55	65	96
No Answer	58	58	NC	NC
Vehicle Miles Traveled Varies Significantly from Day to Day
Yes	11	20	13	36
No	10	13	20	21
No Answer	47	74	564	142
Aware of Existing or Pending Legislation Requiring the Use of Alternative Fuels
Yes	13	25	21	27
No	7	8	15	25
No Answer	58	NC	1126	NC
Plans to Acquire or Convert to Alternative-Fuel Vehicles in 1996
Yes (more than one may apply)	18	27	57	61
Acquire New	16	25	137	118
Convert New	23	57	283	135
Convert Existing	32	51	100	139
No	3	6	5	14
No Answer	43	63	68	509

Table Notes

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