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Regulations last checked for updates: Apr 04, 2025
Title 40 - Protection of Environment last revised: Feb 04, 2028
All Titles
Title 40
Chapter I
Part 600
Subpart F
Appendix Appendix I - Appendix I to Part 600—Highway Fuel Economy Driving Schedule
View all text of [None - None]
Appendix Appendix I - Appendix I to Part 600—Highway Fuel Economy Driving Schedule
[ speed (mph) vs time (sec) ]
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
0
Sample On
50
38.6
100
48.5
150
44.1
200
43.4
250
48.0
300
33.4
350
59.0
1
0.0
51
39.3
101
48.8
151
44.3
201
43.2
251
48.0
301
35.6
351
58.9
2
0.0
52
40.0
102
49.1
152
44.4
202
43.2
252
48.0
302
37.5
352
58.8
3
2.0
53
40.7
103
49.2
153
44.6
203
43.1
253
48.1
303
39.1
353
58.6
4
4.9
54
41.4
104
49.1
154
44.7
204
43.0
254
48.2
304
40.2
354
58.4
5
8.1
55
42.2
105
49.1
155
44.9
205
43.0
255
48.2
305
41.1
355
58.2
6
11.3
56
42.9
106
49.0
156
45.2
206
43.1
256
48.1
306
41.8
356
58.1
7
14.5
57
43.5
107
49.0
157
45.7
207
43.4
257
48.6
307
42.4
357
58.0
8
17.3
58
44.0
108
49.1
158
45.9
208
43.9
258
48.9
308
42.8
358
57.9
9
19.6
59
44.3
109
49.2
159
46.3
209
44.0
259
49.1
309
43.3
359
57.6
10
21.8
60
44.5
110
49.3
160
46.8
210
43.5
260
49.1
310
43.8
360
57.4
11
24.0
61
44.8
111
49.4
161
46.9
211
42.6
261
49.1
311
44.3
361
57.2
12
25.8
62
44.9
112
49.5
162
47.0
212
41.5
262
49.1
312
44.7
362
57.1
13
27.1
63
45.0
113
49.5
163
47.1
213
40.7
263
49.1
313
45.0
363
57.0
14
28.0
64
45.1
114
49.5
164
47.6
214
40.0
264
49.0
314
45.2
364
57.0
15
29.0
65
45.4
115
49.4
165
47.9
215
40.0
265
48.9
315
45.4
365
56.9
16
30.0
66
45.7
116
49.1
166
48.0
216
40.3
266
48.2
316
45.5
366
56.9
17
30.7
67
46.0
117
48.9
167
48.0
217
41.0
267
47.7
317
45.8
367
56.9
18
31.5
68
46.3
118
48.6
168
47.9
218
42.0
268
47.5
318
46.0
368
57.0
19
32.2
69
46.5
119
48.4
169
47.8
219
42.7
269
47.2
319
46.1
369
57.0
20
32.9
70
46.8
120
48.1
170
47.3
220
43.1
270
46.7
320
46.5
370
57.0
21
33.5
71
46.9
121
47.7
171
46.7
221
43.2
271
46.2
321
46.8
371
57.0
22
34.1
72
47.0
122
47.4
172
46.2
222
43.4
272
46.0
322
47.1
372
57.0
23
34.6
73
47.1
123
47.3
173
45.9
223
43.9
273
45.8
323
47.7
373
57.0
24
34.9
74
47.2
124
47.5
174
45.7
224
44.3
274
45.6
324
48.3
374
57.0
25
35.1
75
47.3
125
47.8
175
45.5
225
44.7
275
45.4
325
49.0
375
57.0
26
35.7
76
47.2
126
47.9
176
45.4
226
45.1
276
45.2
326
49.7
376
57.0
27
35.9
77
47.1
127
48.0
177
45.3
227
45.4
277
45.0
327
50.3
377
56.9
28
35.8
78
47.0
128
47.9
178
45.0
228
45.8
278
44.7
328
51.0
378
56.8
29
35.3
79
46.9
129
47.9
179
44.0
229
46.5
279
44.5
329
51.7
379
56.5
30
34.9
80
46.9
130
47.9
180
43.1
230
46.9
280
44.2
330
52.4
380
56.2
31
34.5
81
46.9
131
48.0
181
42.2
231
47.2
281
43.5
331
53.1
381
56.0
32
34.6
82
47.0
132
48.0
182
41.5
232
47.4
282
42.8
332
53.8
382
56.0
33
34.8
83
47.1
133
48.0
183
41.5
233
47.3
283
42.0
333
54.5
383
56.0
34
35.1
84
47.1
134
47.9
184
42.1
234
47.3
284
40.1
334
55.2
384
56.1
35
35.7
85
47.2
135
47.3
185
42.9
235
47.2
285
38.6
335
55.8
385
56.4
36
36.1
86
47.1
136
46.0
186
43.5
236
47.2
286
37.5
336
56.4
386
56.7
37
36.2
87
47.0
137
43.3
187
43.9
237
47.2
287
35.8
337
56.9
387
56.9
38
36.5
88
46.9
138
41.2
188
43.6
238
47.1
288
34.7
338
57.0
388
57.1
39
36.7
89
46.5
139
39.5
189
43.3
239
47.0
289
34.0
339
57.1
389
57.3
40
36.9
90
46.3
140
39.2
190
43.0
240
47.0
290
33.3
340
57.3
390
57.4
41
37.0
91
46.2
141
39.0
191
43.1
241
46.9
291
32.5
341
57.6
391
57.4
42
37.0
92
46.3
142
39.0
192
43.4
242
46.8
292
31.7
342
57.8
392
57.2
43
37.0
93
46.5
143
39.1
193
43.9
243
46.9
293
30.6
343
58.0
393
57.0
44
37.0
94
46.9
144
39.5
194
44.3
244
47.0
294
29.6
344
58.1
394
56.9
45
37.0
95
47.1
145
40.1
195
44.6
245
47.2
295
28.8
345
58.4
395
56.6
46
37.0
96
47.4
146
41.0
196
44.9
246
47.5
296
28.4
346
58.7
396
56.3
47
37.1
97
47.7
147
42.0
197
44.8
247
47.9
297
28.6
347
58.8
397
56.1
48
37.3
98
48.0
148
43.1
198
44.4
248
48.0
298
29.5
348
58.9
398
56.4
49
37.8
99
48.2
149
43.7
199
43.9
249
48.0
299
31.4
349
59.0
399
56.7
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
SEC
MPH
400
57.1
450
58.2
500
54.7
550
55.8
600
48.3
650
50.2
700
54.2
750
26.8
401
57.5
451
58.1
501
54.6
551
55.6
601
48.0
651
50.7
701
54.5
751
24.5
402
57.8
452
58.0
502
54.4
552
55.4
602
47.9
652
51.1
702
54.8
752
21.5
403
58.0
453
58.0
503
54.3
553
55.2
603
47.8
653
51.7
703
55.0
753
19.5
404
58.0
454
58.0
504
54.3
554
55.1
604
47.7
654
52.2
704
55.5
754
17.4
405
58.0
455
58.0
505
54.2
555
55.0
605
47.9
655
52.5
705
55.9
755
15.1
406
58.0
456
58.0
506
54.1
556
54.9
606
48.3
656
52.1
706
56.1
756
12.4
407
58.0
457
58.0
507
54.1
557
54.6
607
49.0
657
51.6
707
56.3
757
9.7
408
58.0
458
57.9
508
54.1
558
54.4
608
49.1
658
51.1
708
56.4
758
7.0
409
57.9
459
57.9
509
54.0
559
54.2
609
49.0
659
51.0
709
56.5
759
5.0
410
57.8
460
58.0
510
54.0
560
54.1
610
48.9
660
51.0
710
56.7
760
3.3
411
57.7
461
58.1
511
54.0
561
53.8
611
48.0
661
51.1
711
56.9
761
2.0
412
57.7
462
58.1
512
54.0
562
53.4
612
47.1
662
51.4
712
57.0
762
0.7
413
57.8
463
58.2
513
54.0
563
53.3
613
46.2
663
51.7
713
57.3
763
0.0
414
57.9
464
58.3
514
54.0
564
53.1
614
46.1
664
52.0
714
57.7
764
0.0
415
58.0
465
58.3
515
54.0
565
52.9
615
46.1
665
52.2
715
58.2
765
Sample Off
416
58.1
446
58.3
516
54.0
566
52.6
616
46.2
666
52.5
716
58.8
417
58.4
467
58.2
517
54.1
567
52.4
617
46.9
667
52.8
717
59.1
418
58.9
468
58.1
518
54.2
568
52.2
618
47.8
668
52.7
718
59.2
419
59.1
469
58.0
519
54.5
569
52.1
619
49.0
669
52.6
719
59.1
420
59.4
470
57.8
520
54.8
570
52.0
620
49.7
670
52.3
720
58.8
421
59.8
471
57.5
521
54.9
571
52.0
621
50.6
671
52.3
721
58.5
422
59.9
472
57.1
522
55.0
572
52.0
622
51.5
672
52.4
722
58.1
423
59.9
473
57.0
523
55.1
573
52.0
623
52.2
673
52.5
723
57.7
424
59.8
474
56.6
524
55.2
574
52.1
624
52.7
674
52.7
724
57.3
425
59.6
475
56.1
525
55.2
575
52.0
625
53.0
675
52.7
725
57.1
426
59.4
476
56.0
526
55.3
576
52.0
626
53.6
676
52.4
726
56.8
427
59.2
477
55.8
527
55.4
577
51.9
627
54.0
677
52.1
727
56.5
428
59.1
478
55.5
528
55.5
578
51.6
628
54.1
678
51.7
728
56.2
429
59.0
479
55.2
529
55.6
579
51.4
629
54.4
679
51.1
729
55.5
430
58.9
480
55.1
530
55.7
580
51.1
630
54.7
680
50.5
730
54.6
431
58.7
481
55.0
531
55.8
581
50.7
631
55.1
681
50.1
731
54.1
432
58.6
482
54.9
532
55.9
582
50.3
632
55.4
682
49.8
732
53.7
433
58.5
483
54.9
533
56.0
583
49.8
633
55.4
683
49.7
733
53.2
434
58.4
484
54.9
534
56.0
584
49.3
634
55.0
684
49.6
734
52.9
435
58.4
485
54.9
535
56.0
585
48.7
635
54.5
685
49.5
735
52.5
436
58.3
486
54.9
536
56.0
586
48.2
6.36
53.6
686
49.5
736
52.0
437
58.2
487
54.9
537
56.0
587
48.1
637
52.5
687
49.7
737
51.3
438
58.1
488
55.0
538
56.0
588
48.0
638
50.2
688
50.0
738
50.5
439
58.0
489
55.0
539
56.0
589
48.0
6.39
48.2
689
50.2
739
49.5
440
57.9
490
55.0
540
56.0
590
48.1
640
46.5
690
50.6
740
48.5
441
57.9
491
55.0
541
56.0
591
48.4
641
46.2
691
51.1
741
47.6
442
57.9
492
55.0
542
56.0
592
48.9
642
46.0
692
51.6
742
46.8
443
57.9
493
55.0
543
56.0
593
49.0
643
46.0
693
51.9
743
45.6
444
57.9
494
55.1
544
56.0
594
49.1
644
46.3
694
52.0
744
44.2
445
58.0
495
55.1
545
56.0
595
49.1
645
46.8
695
52.1
745
42.5
446
58.1
496
55.0
546
56.0
596
49.0
646
47.5
696
52.4
746
39.2
447
58.1
497
54.9
547
55.9
597
49.0
647
48.2
697
52.9
747
35.9
448
58.2
498
54.9
548
55.9
598
48.9
648
48.8
698
53.3
748
32.6
449
58.2
499
54.8
549
55.9
599
48.6
649
49.5
699
53.7
749
29.3
[42 FR 45667, Sept. 12, 1977]
authority:
49 U.S.C. 32901
—23919q, Pub. L. 109-58
source:
41 FR 38685, Sept. 10, 1976, unless otherwise noted.
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