Description: The traffic stations at these locations collect short-term traffic count data to produce Annual Average Daily Traffic (AADT). This point layer contains combined traffic counts from mainlanes and frontage roads at one station displayed on the centerline of the roadway for the State of Texas. The data is created and maintained by the Transportation Planning and Programming (TPP) Division’s Traffic section at TxDOT. Traffic counts are collected on an annual basis as a means of measuring the use of public roads in the state. AADTs are calculated using a volume count, axle factor, and seasonal factor. A general overview of the equation is AADT = axles * axle factor * seasonal factor. The data is sourced from the Statewide Traffic Analysis and Reporting System (STARS II).--Area Corpus Christi
Description: Max speed limit values in miles per hour. This data is an extract from the Geospatial Roadway Inventory Database (GRID), which is TxDOT's system for managing roadway assets in Texas. --Corpus Christi Area
Description: The TxDOT Roadway_Linework_wAssets feature class is a statewide dataset that has attribute information routed to TxDOT Roadway linework. By using linear referencing tools, attribute information from the TxDOT Roadway Inventory table are located on the linework. Roadway attributes such as functional system, traffic counts, surface types among many others can be found on a roadway simply by selecting it or performing a query. The TxDOT Roadway Inventory layer can also be found on TxDOT’s Open Data Portal. This product is created annually by the Transportation Planning and Programming Division at TxDOT in the Data Analysis, Mapping and Reporting Branch for internal and public use.To create a line event (route), use ROUTE_ID from TxDOT Roadway Linework as the Route Identifier. Then, use the TxDOT Roadway Inventory table: RIA_RTE_ID as the Route Identifier, FRM_DFO and TO_DFO as the measure fields.Updated: AnnuallySource: Geospatial Roadway Inventory Database (GRID)---Corpus Chrsiti District
Copyright Text: Transportation Planning and Programming Division - Data Management Section
512-486-5052
TPP-GIS@txdot.gov
Description: A control section is a unique identifier for individual segments of a roadway. Historically control sections were only assigned to on-system, or state-maintained, highways, and were created as a highway referencing system for planning and maintenance projects, etc. However, this dataset also includes off-system, or non-state-maintained, roadways. Control Section numbers are assigned for the life of the roadway and generally do not change or move, regardless of improvements to the roadway. Currently, control sections are located geographically along roadways using linear referencing. The data was created by the TxDOT Transportation Planning and Programming Division's Data Management Section.
This data contains measures. Measures are stored as M-values within each vertex along the line, in the same way that some datasets store z-values for the elevation, except that measures store the distance from the origin, or DFO, of the line. M-enabled networks serve as a framework for locating roadway assets along the network using linear referencing. This data set must be downloaded as a file geodatabase in order keep M-values intact. If downloaded as a shapefile or added to a map from a connection to ArcGIS online, measures will not be applied to the line. ---Corpus Christi District
Description: Roadways are evaluated and classified every ten years based on the level of traffic service and degree of access they provide. All classifications are evaluated collaboratively by TxDOT districts, Metropolitan Planning Organizations, and Federal Highway Administration (FHWA) staff. -- Corpus Christi District
Updated July 2017 to reflect edits provided by the FHWA
Update Frequency: Decennially, or as incremental changes are approved by FHWA
Source: Geospatial Roadway Inventory Database (GRID)
Security Level: Public