1 BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT TRB Planning Applications Conference Monday, May 7, 2007

2 BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT Prepared by: Francisco Torres and Ken Cervenka

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 3 Travel Roadway Networks at NCTCOG 5,000 square-mile of the metropolitan planning area 5,000 square-mile of the metropolitan planning area 32,000 roadway links 32,000 roadway links 14,000 miles 14,000 miles Roadway networks associated to the several planning years. Roadway networks associated to the several planning years. Maintained as separate GIS layers in TransCAD Maintained as separate GIS layers in TransCAD

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 4 North Central Texas Region

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 5 Dallas-Fort Worth Metropolitan Planning Area

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 6 Multi-Year Network Tasks Setting Guidelines Improving existing data Merging of current networks Designing a user interface

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 7 Source of Existing Networks Base Network

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 8 Current Network Updates Process Base Network

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 9 Drawbacks of Maintaining Several Versions Modifications of alignment and attributes are done independently Modifications of alignment and attributes are done independently Updates should be propagated to future planning years Updates should be propagated to future planning years Amount of maintenance work is proportional to the number of versions Amount of maintenance work is proportional to the number of versions Failure to propagate updates results in inconsistency of versions Failure to propagate updates results in inconsistency of versions

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT Multi-Year Concept 2005 Base Network 1999

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 11 Benefits of Multi-Year Network Modifications of alignment and attributes are done at once for several years. Modifications of alignment and attributes are done at once for several years. Easier to maintain. Updates are propagated automatically to future planning years Easier to maintain. Updates are propagated automatically to future planning years Amount of maintenance work is reduced considerably Amount of maintenance work is reduced considerably The network of a specific year can be defined as a subset of the comprehensive line layer The network of a specific year can be defined as a subset of the comprehensive line layer Improved consistency among years Improved consistency among years

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 12 Improving Existing Layers 1.Re-Alignment. Reshape based on All- Streets network and aerials photos 2.Rectification. Check topology, redesign ramps, identify medians and add access roads to transit. 3.Verification of Current Attributes. Number of lanes, signalized intersections, horizontal signage.

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 13 Re- alignment of network

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 14 Compatibility with detailed All-Streets network

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 15 Intersection of 4 Roads with Medians

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 16 Rectification of Ramps

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 17 Access to Train/Rail stations

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 18 Multi-Year Network Basic Features Only one file is used Only one file is used Need of additional editing tools to identify overlapping links Need of additional editing tools to identify overlapping links Start and ending years must be defined Start and ending years must be defined

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 19 Example of Future Interchange

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 20 Example of Railroad Crossing

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 21 Treatment of future alignments

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 22 Storing Attribute Data

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 23 Merging Year Networks

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 24 Merging Existing Networks

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 25 Comparing 2005 & 2030

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 26 Comparing 2005 & 2030

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 27 Spatial Similarity of Networks

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 28 Tasks to Merge Year Networks Identify common alignments Identify common alignments Consider future alignments Consider future alignments Assign a life cycle to every alignment (start and end year) Assign a life cycle to every alignment (start and end year) Fix inconsistencies of attributes for similar alignments Fix inconsistencies of attributes for similar alignments Identify life cycle of attributes Identify life cycle of attributes

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 29 Master Network Interface

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 30 Improvements to Existing Network Editing Tools Multi-User environment for coders Multi-User environment for coders Automatic error checking of attribute data Automatic error checking of attribute data Keeping a log of changes made to master multiyear network (who, when & what) Keeping a log of changes made to master multiyear network (who, when & what)

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 31 Merging Networks from Coders Track Updates Check Connectivity Fix Errors

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 32 Multi-User Environment Prevent Errors Prevent Errors Prevent Errors Prevent Errors Track Updates

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 33 Future Steps Multi-Year and Multi-User network coding interface Multi-Year and Multi-User network coding interface Automatic communication of network changes from regional agencies Automatic communication of network changes from regional agencies Integration with Other Datasets (TIP and transportation infrastructure geodatabases) Integration with Other Datasets (TIP and transportation infrastructure geodatabases) Display/Update of Year Information on the Web Display/Update of Year Information on the Web Extending coverage of roadway network to the full 16-county NCTCOG area Extending coverage of roadway network to the full 16-county NCTCOG area

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 34 Network Updates Alternatives Final recommendations Corridor Study NCTCOG All-Streets Layer Multi-Year Network Updates Checks NCTCOG All-Streets Layer Multi-Year Network Updates Checks Alternatives Final recommendations Corridor Study NCTCOG All-Streets Layer Multi-Year Network Updates Checks 2009

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 35 GIS Database Integration Multi- Year Network Multi-Year Transportation Geodatabase Infrastructure Demand Accidents Demand

BENEFITS OF A MULTI-YEAR TRAVEL MODEL NETWORK CODING ENVIRONMENT 36 Questions? Thank You!