40 C.F.R. Appendix D to Part 1037
Heavy-Duty Grade Profile for Steady-State Test Cycles
Cite as 40 C.F.R. Appendix D to Part 1037 (2026)
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 [89 FR 29793, Apr. 22, 2024]