Geographic Files
The Triangle Regional Model (TRM) Service Bureau develops and maintains model related information, documentation, and geographic files. These can be used in the TransCAD transportation modeling software package and are not available to the general public. Please contact Leta Huntsinger to request access to the non-public section of this Web site for copies of these TRM files.
Images of the geographic files are available for viewing below. For the following images, open each link, right click on the image, and select "Save Picture as". These are full sized and uncompressed for download and use.
2002 Network Image (100 KB)
2002 TAZs Image (188 KB)
2002 Transit Image (98 KB)
2005 Network Image (99 KB)
2005 TAZs Image (167 KB)
Chronological Summary
The following table summarizes the evolution of the Triangle Regional Model, in addition to basic data and facts.
Download printable pdf of the chronological summary. (pdf opens in a new window, 24 kb)
TRIANGLE REGIONAL MODEL - Chronological Summary
| Model |
1995 Updated |
2002 Updated |
2002 Expanded |
2002 New Starts |
2005 Major Update |
| Platform |
Tranplan |
TransCAD 4.8 |
TransCAD 4.8 |
TransCAD 4.8 |
TransCAD 4.8 |
| Calibration Year |
1995 |
2002 |
2002 |
2002 |
2005/2006 |
| Validation Year |
2002 |
n/a |
n/a |
2005 |
Not yet determined |
| Model Boundary |
Original TRM Boundary |
Original TRM Boundary |
Slightly larger than original TRM Boundary |
Original TRM Boundary + CAMPO MAB |
Tier 1 or Tier 2 Boundaries |
| TAZs – file name |
ModelTAZ1995.dbd |
2002TAZs_080905.dbd |
02XPTAZs_100405.dbd |
02XPTAZs_100405.dbd |
2005TAZs_011806.dbd |
| TAZs – number of internal / external / total |
2321 Internal
77 External
2389 TOTAL |
2188 Internal
77 External
2265 TOTAL |
2317 Internal
72 External
2389 TOTAL |
2317 Internal
72 External
2389 TOTAL |
2851 Internal
TBD External
TBD TOTAL |
| Socio Economic (SE) Data – date received |
June 23, 2004 |
Sept 22, 2005 |
Sept 22, 2005 |
Not yet determined |
Not yet adopted |
| SE Data – date represented |
2002 |
2002 |
2002 |
2002 |
2005 |
| Survey Data Used |
1995 Household
1995 Onboard |
1995 Household Re-expanded using 2000 Census data
2000 transit ridership data |
2006 Household
2006 Onboard |
| Used For |
2025 Long Range Transportation Plan (LRTP) |
n/a |
n/a |
2030 LRTP |
|
| Total Population |
1,149,114 |
1,162,698 |
1,216,113 |
1,216,113 |
Not yet adopted |
| Total Employment |
679,213 |
680,577 |
683,784 |
683,784 |
Not yet adopted |
|
