§ 86.129-94 Road load power, test weight, inertia weight class determination, and fuel temperature profile.
Section 86.129-94 includes text that specifies requirements that differ from § 86.129-80. Where a paragraph in § 86.129-80 is identical and applicable to § 86.129-94, this may be indicated by specifying the corresponding paragraph and the statement “[Reserved]. For guidance see § 86.129-80.” Where a corresponding paragraph of § 86.129-80 is not applicable, this is indicated by the statement “[Reserved].”
(a) Flywheels, electrical, or other means of simulating test weight as shown in the following table shall be used. If the equivalent test weight specified is not available on the dynamometer being used, the next higher equivalent test weight (not to exceed 250 pounds) available shall be used:
| Road load power at 50 mi/hour—light duty trucks 1 2 3 | Test weight basis 4 5 | Test equivalent test weight (pounds) | Inertia weight class (pounds) |
|---|---|---|---|
| Up to 1062 | 1,000 | 1,000 | |
| 1063 to 1187 | 1,125 | 1,000 | |
| 1188 to 1312 | 1,250 | 1,250 | |
| 1313 to 1437 | 1,375 | 1,250 | |
| 1438 to 1562 | 1,500 | 1,500 | |
| 1563 to 1687 | 1,625 | 1,500 | |
| 1688 to 1812 | 1,750 | 1,750 | |
| 1813 to 1937 | 1,875 | 1,750 | |
| 1938 to 2062 | 2,000 | 2,000 | |
| 2063 to 2187 | 2,125 | 2,000 | |
| 2188 to 2312 | 2,250 | 2,250 | |
| 2313 to 2437 | 2,375 | 2,250 | |
| 2438 to 2562 | 2,500 | 2,500 | |
| 2563 to 2687 | 2,625 | 2,500 | |
| 2688 to 2812 | 2,750 | 2,750 | |
| 2813 to 2937 | 2,875 | 2,750 | |
| 2938 to 3062 | 3,000 | 3,000 | |
| 3063 to 3187 | 3,125 | 3,000 | |
| 3188 to 3312 | 3,250 | 3,000 | |
| 3313 to 3437 | 3,375 | 3,500 | |
| 3438 to 3562 | 3,500 | 3,500 | |
| 3563 to 3687 | 3,625 | 3,500 | |
| 3688 to 3812 | 3,750 | 3,500 | |
| 3813 to 3937 | 3,875 | 4,000 | |
| 3938 to 4125 | 4,000 | 4,000 | |
| 4126 to 4375 | 4,250 | 4,000 | |
| 4376 to 4625 | 4,500 | 4,500 | |
| 4626 to 4875 | 4,750 | 4,500 | |
| 4876 to 5125 | 5,000 | 5,000 | |
| 5126 to 5375 | 5,250 | 5,000 | |
| 5376 to 5750 | 5,500 | 5,500 | |
| 5751 to 6250 | 6,000 | 6,000 | |
| 6251 to 6750 | 6,500 | 6,500 | |
| 6751 to 7250 | 7,000 | 7,000 | |
| 7251 to 7750 | 7,500 | 7,500 | |
| 7751 to 8250 | 8,000 | 8,000 | |
| 8251 to 8750 | 8,500 | 8,500 | |
| 8751 to 9250 | 9,000 | 9,000 | |
| 9251 to 9750 | 9,500 | 9,500 | |
| 9751 to 10250 | 10,000 | 10,000 | |
| 10251 to 10750 | 10,500 | 10,500 | |
| 10751 to 11250 | 11,000 | 11,000 | |
| 11251 to 11750 | 11,500 | 11,500 | |
| 11751 to 12250 | 12,000 | 12,000 | |
| 12251 to 12750 | 12,500 | 12,500 | |
| 12751 to 13250 | 13,000 | 13,000 | |
| 13251 to 13750 | 13,500 | 13,500 | |
| 13751 to 14000 | 14,000 | 14,000 |
1 For all light-duty trucks except vans, and for heavy-duty vehicles optionally certified as light-duty trucks, and for complete heavy-duty vehicles, the road load power (horsepower) at 50 mi/h shall be 0.58 times B (defined in footnote 3 of this table) rounded to the nearest 1⁄2 horsepower.
2 For vans, the road load power at 50 mi/h (horsepower) shall be 0.50 times B (defined in footnote 3 of this table) rounded to the nearest 1⁄2 horsepower.
3 B is the basic vehicle frontal area (square foot) plus the additional frontal area (square foot) of mirrors and optional equipment exceeding 0.1 ft 2 which are anticipated to be sold on more than 33 percent of the car line. Frontal area measurements shall be computed to the nearest 10th of a square foot using a method approved in advance by the Administrator.
4 For model year 1994 and later heavy light-duty trucks not subject to the Tier 0 standards of § 86.094-9, test weight basis is as follows: for emissions tests, the basis shall be adjusted loaded vehicle weight, as defined in § 86.094-2; and for fuel economy tests, the basis shall be loaded vehicle weight, as defined in § 86.082-2, or, at the manufacturer's option, adjusted loaded vehicle weight as defined in § 86.094-2. For all other vehicles, test weight basis shall be loaded vehicle weight, as defined in § 86.082-2.