6
TRUCK CLASSIFICATION GUIDE
)HZLK VU .YVZZ =LOPJSL >LPNO[ VM ;Y\JR
G.V.W.R.
Category
G.V.W.R. Class
Gross Vehicle Weight Range
Light
1
<W [V
SIZ . => 9
Light
2
SIZ . => 9
Medium
3
SIZ . => 9
Medium
SIZ . => 9
Medium
SIZ . => 9
Medium
6
SIZ . => 9
/LH]`
7
SIZ . => 9
/LH]`
8
SIZ HUK <W . => 9
U.S. EPA Noise Regulations For On Road Trucks
;OL ÄYZ[ UH[PVU^PKL YLN\SH[PVU VM [Y\JR UVPZL ^HZ LZ[HISPZOLK ^P[O [OL 5VPZL *VU[YVS (J[ VM
73
:;(;
9LN\SH[PVUZ HWWS` [V [Y\JRZ NYLH[LY [OHU
SIZ . => 9 5VPZL YLN\SH[PVUZ HWWS` [V
[V[HS [Y\JR UVPZL UV[ Q\Z[ L_OH\Z[ UVPZL ;OL Ä]L THQVY ZV\YJLZ VM UVPZL PU [Y\JRZ HYL!
-HU 5VPZL
4LJOHUPJHS 5VPZL
;PYLZ
(PY 0U[HRL
,UNPUL +YP]L ;YHPU
,_OH\Z[
Aftermarket Regulations For Total Truck Noise When Measured at 50 Feet Are:
;Y\JRZ TVKLS `LHY HUK UL^LY K)(
;Y\JRZ TVKLS `LHY HUK VSKLY K)(
<ZHNL VM [OL T\MÅLYZ HZ YLJVTTLUKLK PU [OL UVPZL JOHY[Z I` LUNPUL HWWSPJH[PVU HUK HZ YLJVTTLUKLK PU [OL PUKP]PK\
HS L_OH\Z[ ZJOLTH[PJ JVU[HPULK I` HWWSPJH[PVU ^PSS LUZ\YL JVTWSPHUJL ^P[O [OL YLN\SH[PVUZ
Maintenance Tips to Assist in Reduction of Exhaust Noise:
*OLJR ÅL_ [\IPUN YLN\SHYS` 9LWHPY ^VYU VY SLHRPUN [\IPUN
4HRL Z\YL [OL L_OH\Z[ Z`Z[LT PZ WYVWLYS` Z\WWVY[LK
^P[O YLX\PYLK IYHJRL[Z JSHTWZ HUK IYHJLZ
*OLJR Z[YHW ZLHS IHUK JSHTWZ [V LUZ\YL WYVWLYS` [PNO[LULK
[V H]VPK SLHRZ
*VUZPKLY HJV\Z[PJ JVTWV\UK ^OLU YLWHPYPUN 6+ 0+ JVUULJ[PVUZ