Data Dictionary
| Attribute |
Domain Type |
Description |
| ID |
Integer |
Unique identifier to link with FAF network arc DATA field |
| Version |
Character |
Used for maintaining consistency across data files containing alternate releases of the FAF. |
| State |
Character |
State Abbreviation |
| CTFIS |
Integer |
County Code |
| SIGN1 |
Character |
State Highway Route Sign |
| USLRSKEY |
Character |
Unique State Route Key |
| BEGMP |
Real |
Start of section milepost |
| ENDMP |
Real |
End of section milepost |
| AADT07 |
Integer |
HPMS annual average daily traffic for year 2007, derived from HPMS 2008 database. Volume/day/route |
| AADTT07 |
Integer |
Year 2007 Truck Volume estimated using a combination of HPMS 2008 database, State truck percentage, and functional class specific defaults. Volume/day/route |
| FAF07 |
Integer |
FAF 3.4 long distance truck volume estimated based on the FAF 3.4 Origin-Destination truck tonnage and includes empty trucks. Volume/day/route |
| NONFAF07 |
Integer |
Local truck traffic that is not part of FAF 3.4 O-D database. Volume/day/route |
| AADT40 |
Integer |
Year 2040 forecast Annual Average Traffic Volume estimated using the HPMS 20 years growth factors and projected to future using linear growth. Volume/day/route |
| AADTT40 |
Integer |
Forecast Annual Average Truck Volume estimated using the HPMS 20 years growth factors and projected to future using linear growth. Volume/day/route |
| FAF40 |
Integer |
Year 2040 FAF 3.4 long distance truck volume estimated based on the forecasted FAF 3.4 Origin-Destination truck tonnage and includes empty trucks. Volume/day/route |
| NONFAF40 |
Integer |
Year 2040 Local truck traffic that is not part of FAF 3.4 O-D database. Volume/day/route |
| CAP07 |
Integer |
Link specific peak capacity estimated using the procedures outlined in HCM 2000 and the arc geometry provided in 2008 HPMS database. Volume/hour/route |
| SF07 |
Integer |
Estimated service flow using the procedures outlined in HCM 2000 and arc geometry, FAF truck, non-FAF truck and passenger volume. Volume/hour/route |
| VCR07 |
Real |
2007 estimated volume to capacity ratio, estimated by dividing SF07 with CAP07. Unit less |
| SPEED07 |
Real |
2007 estimated peak period link speed, estimated using the procedures outlined in HCM 2000 and the arc geometry provided in 2008 HPMS database. miles/hour |
| DELAY07 |
Real |
2007 estimated peak period link delay, estimated using the procedures outlined in HCM 2000 and the arc geometry provided in 2008 HPMS database. In hours |
| CAP40 |
Integer |
Link specific peak capacity estimated using the procedures outlined in HCM 2000. Volume/hour/route |
| VCR40 |
Real |
2040 estimated volume to capacity ratio, estimated by dividing SF40 with CAP40. Unit less |
| SPEED40 |
Real |
2040 estimated peak period link speed, estimated using the procedures outlined in HCM 2000. Miles/hour |
| DELAY40 |
Real |
2040 estimated peak period link delay, estimated using the procedures outlined in HCM 2000. In hours |
| VMT_07 |
Integer |
2007 Total VMT (length times AADT07) |
| VMT_40 |
Integer |
2040 Total VMT (length times AADT40) |
| TVMT_07 |
Integer |
2007 Total Truck VMT (length times AADTT07) |
| TVMT_40 |
Integer |
2040 Total Truck VMT (length times AADTT40) |
| FAF_VMT_07 |
Integer |
2007 FAF Trucks VMT (length times FAF07) |
| FAF_VMT_40 |
Integer |
2040 FAF Trucks VMT (length times FAF40) |
| YKTONS_07 |
Integer |
Annual FAF truck Tonnage, 2007 in Kilo Tons |
| YKTONS_40 |
Integer |
Annual FAF truck Tonnage, 2040 in Kilo Tons |
