# NG V & ABT Tre at men t in Medium and Hea vy Duty Truck Rule

15 July 2011

1 **** EP A Staff Dr aft - Deliber ative ****

# Ag enda • Cr editing of Natur al Gas Vehicles • Structur e of Ave ra ging , Banking and Tra ding Pr ovisions

# Final Rule NGV Tre at men t • NHTS A & EP

A ha ve harmoniz ed r ec ognizing NG vehicles lower CO2 emissions due to lower carbon content of fuel. • When compar ed to the diesel and g asoline sta ndar ds in the rule, NG would be e xpect ed to achieve 20 - 30% lower CO2 emissions. • These lower CO2 emissions allow NG engines/vehicles to gener ate a cr edit ag ains t the diesel or g asoline based sta ndar ds. • Some co mmen te rs ha ve sug ges te d using the 0.15 appr oach fr om ligh t - duty for NHTS A portion of the pr ogr am.

# Comparing Appr oaches Side by Side
CO2A ppr oach 0. 15 A ppr oac h Cre di t V al ue $4, 835 $18, 680 CO2R ed ucti on (m et ri c to ns) 290 (5 45) SCC Be ne fit( $) $6, 385 ($ 11, 986) 

### Pe r T ra cto r C om par is on
SCC Be ne fit( $) $6, 385 ($ 11, 986) Fue l Sa vi ngs (g al lo ns) 130, 740 33, 839 En er gy Se cu ri ty Be ne fit( $) $22, 226 $5, 753 If as few as 1/3 of Tra ctor s converted to NGVs using the 0.15 incentive the entir e CO2 r eduction of the pr ogr am would be wiped out.

# Final Rule AB T Tre at men t

• Ave ra ging /Tra ding among v ehicles within the same categories (LHD , MHD , HHD), among engines within the same in te nded ser vice class categories (ag ain LHD , MHD , HHD). • Lik e ve hicles or lik e engines can a ve ra ge /tr ade hicles or lik engines can a • Ave ra ging /Tra ding r es trict ed between v ehicles or engines that ar e significantly differ en t.

– Differ ent weight classes

– Differ ent certification appr oaches

– Differ ent lifetimes differ ent applications and duty cycles

# Wh y Limit Tra ding t o Lik e Pr oducts?

• Significant uncert ainties existing in aver aging /tr ading when cr edit calculations ar e made based on pr ojections of lifetime use r ather than based on actual measur ed performance. • Uncert ainties ar e lower between lik e pr oducts certified in the same w ayand ar e higher for vastly differ ent pr oducts certified in differ ent w ays . • The gr eat er the uncert ainty the mor e lik ely actual incr eases in emissions fr om credit using pr oducts will be higher than emission r eductions fr om cr edit credit using pr oducts will be higher than emission r eductions gener ating pr oducts. 

### • Curr en t ABT structur e that matches certification structur e helps ensur e w e achiev e our en vir onmen ta l and ener gy security goals , main ta in a level pla ying field and avo id disruptions to e xis ting mark et structur es. • AB T structure is critical to support the rule enjoys fr om a number of industry and NGO stakeholder s.

# Dif fe re nt Solutions fo r Dif

fe re nt Segmen ts Make Cr edit Tra ding Pr oblematic

full - siz e pick up trucks & work va ns • HD Pickup Trucks and Vans • certified on chassis test as complete vehicle • use pattern varies greatly from recreational to daily towing services

• Semi Tractors • certified in pieces with purposeful disconnect between Semi Tr act or s
vocational vehicles • certified in pieces with purposeful disconnect between engines & tr actors • engines certified in engine test cell • tr actors certified using a model • aer odynamics tested using OEM methods • tires tested according to ISO procedure • weight reduction based on pick list • use pattern varies but not as significantly as for pickups, but loads & terrain do vary significantly

• Vo cational Vehicles • certified in two pieces • engines using engine dynamometer • trucks based on model & ISO tire test • tire threshold met by large number of tires today