Alamo Area Metropolitan Planning Organization
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Download TDM Data

Traffic Analysis Zone - with MPO-related layers (2015, 2025, 2035, 2045) UPDATED

The 2015, 2025, 2035, & 2045 demographic data bases are composed of population, households, household income and employment inventories for each traffic analysis zone (TAZ) comprising the study area. TAZs are the geographic units used to inventory existing and future demographic data required for modeling purposes. Typically, a TAZ structure is developed that is consistent with the defined roadway structure. This is accomplished by allowing network roadways to be the primary definition of TAZ boundaries and attempting to minimize roadways that traverse individual TAZs. The rationale for such a structure definition is that the model will perform better by providing trips comparable access opportunities to adjacent streets and transit lines.

Download as:

TransCAD ArcGIS (.shp) Excel (.xls)

Highway Network – with MPO related layers UPDATED

The current 2015 base year network, along with the 2025 Air Quality network, is available for downloading in TransCAD or ArcGIS formats. The region’s highway networks, which are coded for use by the Travel Demand Models covers all of five counties including Bexar, Comal, Guadalupe, Kendall & Wilson Counties. The highway networks are generally considered to represent all roadways classified as collector and above within the Functional Classification system. Specific roadway attributes for the coded networks include Functional Classification (FUNCL), Facility Type (FTYPE), Direction (one or 2-way) Area Type (AT), Lanes, Street Name, County, Speeds, Capacity, Counts, Modeled or Projected Volumes, CMP Volumes, Travel Times and Toll costs where applicable. For modeling purposes, the roadway networks are used to estimate travel time skims (AM/PM peak travel period and off-peak roadway travel times for all TAZ to all other TAZ). Travel time skims are indicative of accessibility, thus affecting travel orientation and traffic patterns.

Download preferred format and year:

Coming Soon: 2035 Network

2025 - TransCAD 2025 - ESRI .shp


Transit Network – with MPO related layers

The 2010, 2020 & 2040 Transit Networks are also available. The 2010 transit system, which operates almost exclusively along mixed flow highway links, consists of 50+ bus routes for various bus modes including Metro, Frequent, Express, Skip & Trolley. Future year transit networks contain additional premium modes of transit.

Download preferred format and year:

2040 - TransCAD

Coming Soon:

2010 - TransCAD | 2020 - TransCAD

2010 - ArcGIS (.shp) | 2020 - ArcGIS (.shp) | 2040 - ArcGIS (.shp)