APPENDIX E-3

MOBILE6.2 Input Parameter Summary
Appendix E-3 1

Table E-3-1: General Parameters and Options

Input parameter Assumptions Used

Output Pollutants PM2.5, NOX

Analysis Estimate Annual

Traffic Data

PENNDOT Roadway Management 

System (RMS) Source Data Year

2002 for year 2002 

2005 for year 2009

HPMS VMT Adjustment Year

PENNDOT Seasonal Factor Data

PENNDOT Hourly Pattern Data

PENNDOT RMS Truck Percentages 

Used for Vehicle Mixes

MOBILE6 Defaults Used to Disaggregate 

Auto and Truck Vehicle Mix Categories

Traffic Volume Forecasted Growth Forecasted using PennDOT study growth factors; 

expanded 2005 volumes to 2009

M6 Parameters

Emissions Calendar Year Varies by Analysis Year (2002, 2009)

Evaluation Month

Annual – 12 months

1 – Jan ~ Jun 

7 – Jul ~ Dec

Season 1 – May ~ September

 2 – January ~ April, October ~ December

CAAA Standards Enabled

Tier2 Standards Enabled

North-East NLEV Included

Pennsylvania Clean Vehicle Program Included (2009)

2007 HDDV Rule Enabled

Refueling Emissions Not Included

Registration Data 02 Local Data + National Truck Defaults for year 2002

05 Local Data + National Truck Defaults for year 2009

Diesel Sales Fractions National Defaults

VMT by Hour

02 Local Data for year 2002

05 Local Data for year 2009 

(varies by cty, fc)

VMT by Facility Each facility run as separate scenario

VMT by Speed Calculated by PPSUITE

Min/Max Temps

2002 data for year 2002 (from January to December):

31.7/46.7 31.5/50.7 36.1/54.9 47.2/67.2 52.9/73.7 63.9/83.8 

70.4/88.8 70.4/88.6 62.9/81.4 50.6/64.5 38.5/53.2 28.5/42.2

2005 data for year 2009 (from January to December):

25.1/38.5 28.1/44.1 31.3/47.7 44.5/66 49.6/69.9 65.8/83.7 

70.2/87.5 71.3/88 64.1/83.5 51.3/66.2 39.5/59 27.5/41.2

Absolute Humidity

2002 data for year 2002 (from January to December):

24.161 17.742 27.321 40.052 47.226 70.318 82.789 78.735 68.23 

46.535 29.644 18.262

2005 data for year 2009 (from January to December):

17.14 17.378 18.832 29.089 35.581 74.437 83.394 81.974 58.584 

45.997 26.483 15.991

Fuel Program 4 (using RFG assumptions)

RVP

 13.47 – January, February, December

 10.56 – March, April, October, November

 6.7 – May ~ September (2002)

 6.8 – May ~ September (2009)
Appendix E-3 2

Table E-3-2: Inspection/Maintenance Program Input Parameters

MOBILE6 I/M

Test Types:

Philadelphia* 

PA97 with ASM Program and 

Phase-In Cutpoints

(2002)

Philadelphia* 

Annual OBDII and PA97 w/ASM Program 

and w/Final Cutpoints

(2004 and above)

I/M Program Idle ASM 5015 

Phase-In GC OBDI/M

ASM 5015 

Final

EVAP 

OBD&GC GC

Program Start Year 1984 1997 1997 2004 1997 2004 1997

I/M Stringency 20 20 20 20

I/M Model Years

First Year 1975 1981 1975 1996 1981 1996 1975

Last Year 1980 2050 2050 2050 1995 2050 1995

I/M Waiver Rates

Pre-81 Model Years 3.0% 3.0% 3.0% 3.0% 3.0% 3.0% 3.0%

Post-81 Model Years 3.0% 3.0% 3.0% 3.0% 3.0% 3.0% 3.0%

I/M Compliance 96.0% 96.0% 96.0% 96.0% 96.0% 96.0% 96.0%

Program Type:

Test Only (T/O)

Test & Repair computerized 

(TRC)

Test & Repair Manual (TRM)

TRC TRC TRC TRC TRC TRC TRC

Inspection Frequency

Annual

Biennial

Annual Annual Annual Annual Annual Annual Annual

I/M Vehicles

1 = I/M Benefits not calculated

2 = I/M Benefits calculated

LDGV 2 2 2 2 2 2 2

LDGT1 2 2 2 2 2 2 2

LDGT2 2 2 2 2 2 2 2

LDGT3 2 2 2 2 2 2 2

LDGT4 2 2 2 2 2 2 2

HDGV2B 1 1 1 1 1 1 1

HDGV3 1 1 1 1 1 1 1

HDGV4 1 1 1 1 1 1 1

HDGV5 1 1 1 1 1 1 1

HDGV6 1 1 1 1 1 1 1

HDGV7 1 1 1 1 1 1 1

HDGV8A 1 1 1 1 1 1 1

HDGV8B 1 1 1 1 1 1 1

GAS BUS 1 1 1 1 1 1 1

I/M Effectiveness 1.00 1.00

I/M TTC Credits Included Included

New Model Year Exemption First Model Year First Model Year

I/M Exemptions (<5000 mi) <5000 mi Not Modeled

* Bucks, Chester, Delaware, Montgomery, Philadelphia Counties
Appendix E-3 3

Table E-3-3: Anti-Tampering Program Input Parameters

ATP Parameters Philadelphia*

(2002 & above)

Program Start Year 97

I/M Model Years

First Year 75

Last Year 50

I/M Vehicles

1 = I/M Benefits not calculated

2 = I/M Benefits calculated

LDGV 2

LDGT1 2

LDGT2 2

LDGT3 2

LDGT4 2

HDGV2B 1

HDGV3 1

HDGV4 1

HDGV5 1

HDGV6 1

HDGV7 1

HDGV8A 1

HDGV8B 1

GAS BUS 1

Inspection Frequency:

Annual

Biennial

Annual

I/M Compliance 96.0%

Inspections Performed:

1 = Not Performed

2 = Performed

Air Pump System 2

Catalyst Removal 2

Fuel Inlet Restrictor 2

Tailpipe Lead Deposit Test 1

EGR System 2

Evaporative Control System 2

PCV System 2

Gas Cap 2

* Bucks, Chester, Delaware, Montgomery, Philadelphia Counties