C1-2016-21203. Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles-Phase 2

Correction

In rule document 2016-21203, appearing on pages 73478-74274, in the issue of Tuesday, October 25, 2016, make the following corrections:

§ 1036.805

Symbols, abbreviations, and acronyms. [Corrected]

1. On page 74044, in paragraph (b), the table should read as follows:

Symbol	Quantity	Unit	Unit symbol	Unit in terms of SI base units
a	atomic hydrogen-to-carbon ratio	mole per mole	mol/mol	1.
b	atomic oxygen-to-carbon ratio	mole per mole	mol/mol	1.
C d A	drag area	meter squared	m2	m2.
C rr	coefficient of rolling resistance	kilogram per metric ton	kg/tonne	10−3.
D	distance	miles or meters	mi or m	m.
e	mass weighted emission result	grams/ton-mile	g/ton-mi	g/kg-km.
Eff	efficiency.
E m	mass-specific net energy content	megajoules/kilogram	MJ/kg	m2·s−2.
f n	angular speed (shaft)	revolutions per minute	r/min	π·30·s−1.
i	indexing variable.
k a	drive axle ratio.
k topgear	highest available transmission gear.
m	mass	pound mass or kilogram	lbm or kg	kg.
M	molar mass	gram per mole	g/mol	10−3·kg·mol−1.
M	vehicle mass	kilogram	kg	kg.
M rotating	inertial mass of rotating components	kilogram	kg	kg.
N	total number in a series.
P	power	kilowatt	kW	103·m2·kg·s−3.
T	torque (moment of force)	newton meter	N·m	m2·kg·s−2.
t	time	second	s	s.
Δt	time interval, period, 1/frequency	second	s	s.
UF	utility factor.
v	speed	miles per hour or meters per second	mi/hr or m/s	m·s−1.
W	work	kilowatt-hour	kW·hr	3.6·m2·kg·s−1.
w C	carbon mass fraction	gram/gram	g/g	1.
w CH4N2O	urea mass fraction	gram/gram	g/g	1.
x	amount of substance mole fraction	mole per mole	mol/mol	1.
x b	brake energy fraction.
x bl	brake energy limit.

§ 1037.550

Powertrain testing. [Corrected]

2. On page 74097, in the third column, TABLE 1 OF § 1037.550—STATISTICAL CRITERIA FOR VALIDATING DUTY CYCLES should read as follows:

Table 1 of § 1037.550—Statistical Criteria for Validating Duty Cycles

Parameter 1	Speed control
Slope, a 1	0.990 ≤ a 1 ≤ 1.010.
Absolute value of intercept, |a 0|	≤2.0% of maximum test speed.
Standard error of estimate, SEE	≤2.0% of maximum test speed.
Coefficient of determination, r2	≥0.990.
1 Determine values for specified parameters as described in 40 CFR 1065.514(e) by comparing measured and reference values for f nref,dyno.