Travel Time Cost Surface Model (TTCSM) Python 3.x and ArcGIS Pro Toolbox
Arista R and Sherrill K. 2023. Travel Time Cost Surface Model (TTCSM) Python 3.x and ArcGIS Pro Toolbox. National Park Service
Python 3.x script and ArcGIS Pro toolbox Travel-Time Cost Surface Model (TTCSM). Below is a description of the TTCSM model from the Python 2.x version at - https://irma.nps.gov/DataStore/Reference/Profile/2220993 "This document presents a travel time cost surface model (TTCSM), which calculates travel time from defined point and/or linear locations to other locations within a user-defined area of interest. The TTCSM is designed to model travel time in national park units using readily available geospatial products such as road, trail, and stream networks, digital elevation models and land cover data. Outputs from the TTCSM are point-to-point specific travel time least cost paths (i.e. the modeled fastest path(s)) and raster maps in which each cell value is the modeled time required to reach the given cell from the specified starting point(s). In order to derive accurate travel time estimates, the TTCSM is intended to be dynamic in nature with the ability to accommodate user (e.g., hiker, backpacker), temporal (e.g., winter / summer data collection) and park specific conditions. The essence of the TTCSM is deriving a meaningful travel cost surface. Travel cost is a function of the user-defined and derived cost and speed surfaces. The cost surface defines the weight or impedance of traveling through a cell, while the speed surface defines the speed at which movement within the cell occurs. Speed is a function of the user-defined average walking speed and slope, except on the road network where speed is equal to the defined road speed limit. Using the derived travel cost surface, travel time calculations are performed using either traditional cost distance or more robust path distance modeling methods." Original reference document: https://irma.nps.gov/DataStore/Reference/Profile/2220993 The reference linked above contains the user guide and 2.x version of the code. Model authors: Brent Frakes; Thomas Flowe; Kirk R. Sherrill
- Type
- Script
- Authors
- Arista, Regalia; Sherrill, Kirk
- Date of Issue
- 2023-07-01
- Publisher
- National Park Service
- Units
- IMD , NRSS
- Keywords
- ArcGIS Pro Model, Cost surface model, Geospatial model, IMD Procedures, route planning, TTCSM