Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Appendix D to Part 1037: Appendix D to Part 1037—Heavy-Duty Grade Profile for Steady-State Test Cycles

The following table identifies a grade profile for operating vehicles over the highway cruise cycles specified in subpart F of this part. Determine intermediate values by linear interpolation.
Distance (m) Grade (%)
0 0
402 0
804 0.5
1206 0
1210 0
1222 −0.10
1234 0
1244 0
1294 0.36
1344 0
1354 0
1408 −0.28
1504 −1.04
1600 −0.28
1654 0
1666 0
1792 0.39
1860 0.66
1936 1.15
2098 2.44
2260 1.15
2336 0.66
2404 0.39
2530 0
2548 0
2732 −0.46
2800 −0.69
2880 −1.08
2948 −1.53
3100 −2.75
3252 −1.53
3320 −1.08
3400 −0.69
3468 −0.46
3652 0
3666 0
3742 0.35
3818 0.90
3904 1.59
3990 0.90
4066 0.35
4142 0
4158 0
4224 −0.10
4496 −0.69
4578 −0.97
4664 −1.36
4732 −1.78
4916 −3.23
5100 −1.78
5168 −1.36
5254 −0.97
5336 −0.69
5608 −0.10
5674 0
5724 0
5808 0.10
5900 0.17
6122 0.38
6314 0.58
6454 0.77
6628 1.09
6714 1.29
6838 1.66
6964 2.14
7040 2.57
7112 3.00
7164 3.27
7202 3.69
7292 5.01
7382 3.69
7420 3.27
7472 3.00
7544 2.57
7620 2.14
7746 1.66
7870 1.29
7956 1.09
8130 0.77
8270 0.58
8462 0.38
8684 0.17
8776 0.10
8860 0
8904 0
9010 −0.38
9070 −0.69
9254 −2.13
9438 −0.69
9498 −0.38
9604 0
9616 0
9664 0.26
9718 0.70
9772 0.26
9820 0
9830 0
9898 −0.34
10024 −1.33
10150 −0.34
10218 0
10228 0
10316 0.37
10370 0.70
10514 1.85
10658 0.70
10712 0.37
10800 0
10812 0
10900 −0.37
10954 −0.7
11098 −1.85
11242 −0.70
11296 −0.37
11384 0
11394 0
11462 0.34
11588 1.33
11714 0.34
11782 0
11792 0
11840 −0.26
11894 −0.70
11948 −0.26
11996 0
12008 0
12114 0.38
12174 0.69
12358 2.13
12542 0.69
12602 0.38
12708 0
12752 0
12836 −0.10
12928 −0.17
13150 −0.38
13342 −0.58
13482 −0.77
13656 −1.09
13742 −1.29
13866 −1.66
13992 −2.14
14068 −2.57
14140 −3.00
14192 −3.27
14230 −3.69
14320 −5.01
14410 −3.69
14448 −3.27
14500 −3.00
14572 −2.57
14648 −2.14
14774 −1.66
14898 −1.29
14984 −1.09
15158 −0.77
15298 −0.58
15490 −0.38
15712 −0.17
15804 −0.10
15888 0
15938 0
16004 0.10
16276 0.69
16358 0.97
16444 1.36
16512 1.78
16696 3.23
16880 1.78
16948 1.36
17034 0.97
17116 0.69
17388 0.10
17454 0
17470 0
17546 −0.35
17622 −0.90
17708 −1.59
17794 −0.90
17870 −0.35
17946 0
17960 0
18144 0.46
18212 0.69
18292 1.08
18360 1.53
18512 2.75
18664 1.53
18732 1.08
18812 0.69
18880 0.46
19064 0
19082 0
19208 −0.39
19276 −0.66
19352 −1.15
19514 −2.44
19676 −1.15
19752 −0.66
19820 −0.39
19946 0
19958 0
20012 0.28
20108 1.04
20204 0.28
20258 0
20268 0
20318 −0.36
20368 0
20378 0
20390 0.10
20402 0
20406 0
20808 −0.50
21210 0
21612 0

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER U—AIR POLLUTION CONTROLS
PART 1037—CONTROL OF EMISSIONS FROM NEW HEAVY-DUTY MOTOR VEHICLES

The following table identifies a grade profile for operating vehicles over the highway cruise cycles specified in subpart F of this part. Determine intermediate values by linear interpolation.

Distance (m) Grade (%)

0 0

402 0

804 0.5

1206 0

1210 0

1222 −0.10

1234 0

1244 0

1294 0.36

1344 0

1354 0

1408 −0.28

1504 −1.04

1600 −0.28

1654 0

1666 0

1792 0.39

1860 0.66

1936 1.15

2098 2.44

2260 1.15

2336 0.66

2404 0.39

2530 0

2548 0

2732 −0.46

2800 −0.69

2880 −1.08

2948 −1.53

3100 −2.75

3252 −1.53

3320 −1.08

3400 −0.69

3468 −0.46

3652 0

3666 0

3742 0.35

3818 0.90

3904 1.59

3990 0.90

4066 0.35

4142 0

4158 0

4224 −0.10

4496 −0.69

4578 −0.97

4664 −1.36

4732 −1.78

4916 −3.23

5100 −1.78

5168 −1.36

5254 −0.97

5336 −0.69

5608 −0.10

5674 0

5724 0

5808 0.10

5900 0.17

6122 0.38

6314 0.58

6454 0.77

6628 1.09

6714 1.29

6838 1.66

6964 2.14

7040 2.57

7112 3.00

7164 3.27

7202 3.69

7292 5.01

7382 3.69

7420 3.27

7472 3.00

7544 2.57

7620 2.14

7746 1.66

7870 1.29

7956 1.09

8130 0.77

8270 0.58

8462 0.38

8684 0.17

8776 0.10

8860 0

8904 0

9010 −0.38

9070 −0.69

9254 −2.13

9438 −0.69

9498 −0.38

9604 0

9616 0

9664 0.26

9718 0.70

9772 0.26

9820 0

9830 0

9898 −0.34

10024 −1.33

10150 −0.34

10218 0

10228 0

10316 0.37

10370 0.70

10514 1.85

10658 0.70

10712 0.37

10800 0

10812 0

10900 −0.37

10954 −0.7

11098 −1.85

11242 −0.70

11296 −0.37

11384 0

11394 0

11462 0.34

11588 1.33

11714 0.34

11782 0

11792 0

11840 −0.26

11894 −0.70

11948 −0.26

11996 0

12008 0

12114 0.38

12174 0.69

12358 2.13

12542 0.69

12602 0.38

12708 0

12752 0

12836 −0.10

12928 −0.17

13150 −0.38

13342 −0.58

13482 −0.77

13656 −1.09

13742 −1.29

13866 −1.66

13992 −2.14

14068 −2.57

14140 −3.00

14192 −3.27

14230 −3.69

14320 −5.01

14410 −3.69

14448 −3.27

14500 −3.00

14572 −2.57

14648 −2.14

14774 −1.66

14898 −1.29

14984 −1.09

15158 −0.77

15298 −0.58

15490 −0.38

15712 −0.17

15804 −0.10

15888 0

15938 0

16004 0.10

16276 0.69

16358 0.97

16444 1.36

16512 1.78

16696 3.23

16880 1.78

16948 1.36

17034 0.97

17116 0.69

17388 0.10

17454 0

17470 0

17546 −0.35

17622 −0.90

17708 −1.59

17794 −0.90

17870 −0.35

17946 0

17960 0

18144 0.46

18212 0.69

18292 1.08

18360 1.53

18512 2.75

18664 1.53

18732 1.08

18812 0.69

18880 0.46

19064 0

19082 0

19208 −0.39

19276 −0.66

19352 −1.15

19514 −2.44

19676 −1.15

19752 −0.66

19820 −0.39

19946 0

19958 0

20012 0.28

20108 1.04

20204 0.28

20258 0

20268 0

20318 −0.36

20368 0

20378 0

20390 0.10

20402 0

20406 0

20808 −0.50

21210 0

21612 0

Collected 2026-08-27T02:26:04Z. Source file · JSON

Browse this collection