GroundRules
40 CFR Appendix E to Subpart S of Part 51: Appendix E to Subpart S of Part 51—Transient Test Driving Cycle
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER C—AIR PROGRAMS
- PART 51—REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS
- Subpart S—Inspection/Maintenance Program Requirements
(I) Driver's trace. All excursions in the transient driving cycle shall be evaluated by the procedures defined in § 86.115-78(b)(1) and § 86.115(c) of this chapter. Excursions exceeding these limits shall cause a test to be void. In addition, provisions shall be available to utilize cycle validation criteria, as described in § 86.1341-90 of this chapter, for trace speed versus actual speed as a means to determine a valid test.
(II) Driving cycle. The following table shows the time speed relationship for the transient IM240 test procedure.
Second MPH
0 0
1 0
2 0
3 0
4 0
5 3
6 5.9
7 8.6
8 11.5
9 14.3
10 16.9
11 17.3
12 18.1
13 20.7
14 21.7
15 22.4
16 22.5
17 22.1
18 21.5
19 20.9
20 20.4
21 19.8
22 17
23 14.9
24 14.9
25 15.2
26 15.5
27 16
28 17.1
29 19.1
30 21.1
31 22.7
32 22.9
33 22.7
34 22.6
35 21.3
36 19
37 17.1
38 15.8
39 15.8
40 17.7
41 19.8
42 21.6
43 23.2
44 24.2
45 24.6
46 24.9
47 25
48 25.7
49 26.1
50 26.7
51 27.5
52 28.6
53 29.3
54 29.8
55 30.1
56 30.4
57 30.7
58 30.7
59 30.5
60 30.4
61 30.3
62 30.4
63 30.8
64 30.4
65 29.9
66 29.5
67 29.8
68 30.3
69 30.7
70 30.9
71 31
72 30.9
73 30.4
74 29.8
75 29.9
76 30.2
77 30.7
78 31.2
79 31.8
80 32.2
81 32.4
82 32.2
83 31.7
84 28.6
85 25.1
86 21.6
87 18.1
88 14.6
89 11.1
90 7.6
91 4.1
92 0.6
93 0
94 0
95 0
96 0
97 0
98 3.3
99 6.6
100 9.9
101 13.2
102 16.5
103 19.8
104 22.2
105 24.3
106 25.8
107 26.4
108 25.7
109 25.1
110 24.7
111 25.2
112 25.4
113 27.2
114 26.5
115 24
116 22.7
117 19.4
118 17.7
119 17.2
120 18.1
121 18.6
122 20
123 20.7
124 21.7
125 22.4
126 22.5
127 22.1
128 21.5
129 20.9
130 20.4
131 19.8
132 17
133 17.1
134 15.8
135 15.8
136 17.7
137 19.8
138 21.6
139 22.2
140 24.5
141 24.7
142 24.8
143 24.7
144 24.6
145 24.6
146 25.1
147 25.6
148 25.7
149 25.4
150 24.9
151 25
152 25.4
153 26
154 26
155 25.7
156 26.1
157 26.7
158 27.3
159 30.5
160 33.5
161 36.2
162 37.3
163 39.3
164 40.5
165 42.1
166 43.5
167 45.1
168 46
169 46.8
170 47.5
171 47.5
172 47.3
173 47.2
174 47.2
175 47.4
176 47.9
177 48.5
178 49.1
179 49.5
180 50
181 50.6
182 51
183 51.5
184 52.2
185 53.2
186 54.1
187 54.6
188 54.9
189 55
190 54.9
191 54.6
192 54.6
193 54.8
194 55.1
195 55.5
196 55.7
197 56.1
198 56.3
199 56.6
200 56.7
201 56.7
202 56.3
203 56
204 55
205 53.4
206 51.6
207 51.8
208 52.1
209 52.5
210 53
211 53.5
212 54
213 54.9
214 55.4
215 55.6
216 56
217 56
218 55.8
219 55.2
220 54.5
221 53.6
222 52.5
223 51.5
224 50.5
225 48
226 44.5
227 41
228 37.5
229 34
230 30.5
231 27
232 23.5
233 20
234 16.5
235 13
236 9.5
237 6
238 2.5
239 0
Collected 2026-08-27T02:26:04Z. Source file · JSON