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Publication Number: FHWA-HRT-13-036
Date: August 2013

 

The Effective Integration of Analysis, Modeling, and Simulation Tools

APPENDIX A. INI CONFIGURATION FILE

The following tables describe the variables contained within the INI configuration file.

Table 9. Model attributes configuration settings.


Variable Assignment

Description/Explanation

units=MI

The original network describes distances in units of miles

direction_field=1

"1" indicates that NeXTA uses a direction field to interpret the link shape file

control_type_field=0

"0" indicates that NeXTA does not read any control type information from the node shape file

reserve_direction_field=1

"1" indicates that NeXTA will read direction-specific information for some non-directed links (two-way links)

offset_link=1

"1" indicates that NeXTA will add space between directional links to aid visualization

link_capacity_flag=0

"0" indicates that the link capacity is described on a per-lane basis

number_of_lanes_for_two_way_links=0

"0" indicates that lanes on two-way links are described using the number of lanes in each direction

use_optional_centroid_layer=0

"0" indicates that there is no additional shape file to read which only contains zone centroids

use_optional_connector_layer=0

"0" indicates that there is no additional shapefile to read which only contains zonal connector links

Table 10. Node import configuration settings.


Variable Assignment

Description/Explanation

reference_file_name=Node_WGS84_202ft.shp

Identifies "Node_WGS84_202ft.shp" as the shape file that describes the nodes in the network

node_id=ID

Identifies "ID" as the name of the field that contains unique node numbers

TAZ=TAZID

Identifies "TAZID" as the name of the field that contains zone numbers mapped to the associated node numbers

Table 11. Link import configuration settings.


Variable Assignment

Description/Explanation

reference_file_name=Roadway_WGS84_202ft.shp

Identifies "'Roadway_WGS84_202ft.shp" as the shape file that describes the links in the network

from_node_id=FROM_NODE

Identifies "FROM_NODE" as the name of the field that describes the starting node number for one direction on a link

to_node_id=TO_NODE

Identifies "FROM_NODE" as the name of the field that describes the ending node number for one direction on a link

link_id=ID

Identifies "ID" as the name of the field that contains unique link numbers

name=ST_NAME

Identifies "ST_NAME" as the name of the field that contains a street name for each link

length_in_mile=LENGTH

Identifies "LENGTH" as the name of the field describing the length (in miles) of each link

direction=DIR

Identifies "DIR" as the name of the field that describes each link’s directional properties (0 or 2 = two-way, 1 = one-way,
-1 = opposite direction from FROM/TO notation)

link_type =FT

Identifies "FT" as the name of the field that describes the functional classification (equivalent to link type in NeXTA/DTALite) for the directional link in FROM/TO notation

number_of_lanes=AB_LANES

Identifies "AB_LANES" as the name of the field that describes the number of lanes on the directional link in FROM/TO notation

lane_capacity_in_vhc_per_hour AB_CAPACIT

Identifies "AB_CAPACIT" as the name of the field that describes the lane capacity on the directional link in FROM/TO notation

speed_limit_in_mph=AB_SPEED1

Identifies "AB_SPEED1" as the name of the field that describes the free-flow speed on the directional link in FROM/TO notation

r_link_type =FT

Identifies "FT" as the name of the field that describes the functional classification (equivalent to link type in NeXTA/ DTALite) for the directional link in TO/FROM notation. There was no separate field for functional class in the reverse direction, so the same functional class was used for both directions

r_number_of_lanes =BA_LANES

Identifies "BA_LANES" as the name of the field that describes the number of lanes on the directional link in TO/FROM notation

r_lane_capacity_in_vhc_per_hour=BA_CAPACIT

Identifies "BA_CAPACIT" as the name of the field that describes the lane capacity on the directional link in TO/FROM notation

r_speed_limit_in_mph=BA_SPEED1

Identifies "BA_SPEED1" as the name of the field that describes the free-flow speed on the directional link in TO/FROM notation

 

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