Transportation Routing Analysis GIS Model

Project Summary

Full Title:	Transportation Routing Analysis Geographic Information System (TRAGIS) Model
Project ID:	75
Principal Investigator:	Paul Johnson
Keywords:	Technoeconomic analysis; hydrogen delivery; hydrogen supply

Purpose

The TRAGIS model can be used to complete the technoeconomic analysis of hydrogen delivery for the DOE Hydrogen Program by analyzing the highway transportation network to determine locations of fuel stations. This model can also be used to analyze the distribution network of hydrogen from supply locations to retail distribution stations.

Performer

Principal Investigator:	Paul Johnson
Organization:	Oak Ridge National Laboratory (ORNL)
Address:	2360 Cherahala Blvd. Knoxville, TN 37932
Telephone:	865-574-7450
Email:	johnsonpe@ornl.gov
Additional Performers:	Cheng Liu, ORNL

Sponsor(s)

Name:	Eric Huang
Organization:	DOE/OTT
Telephone:	301-903-4630
Email:	Eric.Huang@em.doe.gov

Project Description

Type of Project:	Model
Category:	Energy Infrastructure
Objectives:	Calculate detailed highway, rail, or waterway routes in the U.S. based on user-specified parameters.
Technologies Modeled:	Rail; Highway; Waterway
User Inputs:	Origin and destination for route

Methodology/Approach:	Dykstra shortest path algorithm with variety factors, on each mode, determining lin impedance. Note: TRAGIS uses 1:100,000-scale highway and rail networks, with a 1:2,000,000-scale waterway network. The rail network covers essentially the entire rail network. But the highway network does not cover the "entire" road network. The highway network is comprised of all Interstate highways, most U.S. highways except those that closely parallel Interstate highways, and major state highways. Because the model was designed to examine hazardous material and spent nuclear fuel shipments, local access roads to DOE facilities and commercial nuclear power plants are included. The model is not designed to examine local routing patterns over city streets (such as distributing hydrogen to local fueling stations).

Methodology/Approach:

Dykstra shortest path algorithm with variety factors, on each mode, determining lin impedance. Note: TRAGIS uses 1:100,000-scale highway and rail networks, with a 1:2,000,000-scale waterway network. The rail network covers essentially the entire rail network. But the highway network does not cover the "entire" road network. The highway network is comprised of all Interstate highways, most U.S. highways except those that closely parallel Interstate highways, and major state highways. Because the model was designed to examine hazardous material and spent nuclear fuel shipments, local access roads to DOE facilities and commercial nuclear power plants are included. The model is not designed to examine local routing patterns over city streets (such as distributing hydrogen to local fueling stations).

Hardware/Software Requirements:	Web-based client-server application

User Interface:	Web TRAGIS client user interface (individual routes); Batch TRAGIS client user interface (allows multiple routes to be prepared and calculated at one time); World Wide Web used for communications between the client and the server

Data Used/Contributing Research:	TRAGIS uses transportation networks (barge, highway, rail) that were developed for this model. Population data in TRAGIS is from ORNL’s LandScan USA model. http://www.ornl.gov/sci/gist/landscan/landscanUSA/index.html

Outputs:	Map of route; route description; population density in a buffer (options include 400, 800, and 2,500 meters either side) along route; population count within a buffer (same buffer options apply) along route.

Assumptions Inherent in Model:	For highway routing, basic route types include shortest (minimize distance), quickest (minimize travel time), commercial (70/30 split on travel time and distance), and highway route controlled quantity (HRCQ) of radioactive materials, which mimics USDOT regulations for truck shipments of HRCQ of radioactive materials. For rail routing, TRAGIS factors link distance by a number of categories of traffic density. It also adds penalty factors each time a route changes from one rail carrier to another.

Assumptions Inherent in Model:

For highway routing, basic route types include shortest (minimize distance), quickest (minimize travel time), commercial (70/30 split on travel time and distance), and highway route controlled quantity (HRCQ) of radioactive materials, which mimics USDOT regulations for truck shipments of HRCQ of radioactive materials. For rail routing, TRAGIS factors link distance by a number of categories of traffic density. It also adds penalty factors each time a route changes from one rail carrier to another.

Sensitivity Studies Facilitated:	Alternative routing between origin/destination points can provide sensitivity data on mileage and travel time.

Related Model:	LandScan USA RADTRAN Sandia National Laboratories

Date Last Updated: 09/21/2006