Master Transportation Plan Task 4: Gap Analysis and Needs Network
3 Multimodal Gap Analysis and Needs Network 3.1 Approach Overview
The multimodal gap analysis evaluates Fort Worth’s current transportation network across four core modes—active transportation, roadways, freight, and transit—to identify deficiencies in connectivity, accessibility, and safety. The findings lay the groundwork for targeted investments and policy adjustments that support M1M’s goals. 3.2 Roadway Gap Analysis 3.2.1 Approach The purpose of the roadway gap analysis is to identify needs and propose solutions for poor connectivity, congruency, and accessibility through a geoinformatics analysis. The roadway gap analysis was designed to identify gaps in network connectivity to key destinations and potential barriers in the Greater Fort Worth Area. This gap analysis provides a measurement of system gaps through compounding steps to highlight areas that exhibit the greatest gaps of physical connectivity and network functionality. 3.2.2 Methodology The roadway gap analysis is a composite of analyses to review physical gaps in connectivity throughout the City of Fort Worth and the periphery along with a capacity and operations analysis done to review level or service gaps on existing connections and facilities available to roadway users. The process used to identify physical gaps in connectivity includes steps taken, including creating the network dataset, identifying key destinations, identifying travel shed gaps, and measuring gaps in the roadway network caused by development patterns, planning decisions, and physical barriers. Travelsheds for the top 10 employment areas were created with an expected 15-minute travel time to cover a 1-mile trip to the respective employment area. A second layer showed a half-mile buffer surrounding all modeled 2036 roads with a 0.85 V/C. The combination of the travelshed buffers not serviced within 15 minutes at the 5-mile radius and congested roads buffer were combined to define a single area of focus for gaps in the network. The roadway junctions with three-way intersections and dangling vertices (abrupt end to roadway) were entered into a script for processing potential connections to the existing roadway network for distances of under 0.5 mile and 0.5 mile to 1 mile in length. After running the script, a total of 1,212 refined node connections yielded a total of 65,676 links for the less than 0.5-mile range and 182,565 links between the 0.5- to 1-mile range. Through manual screening a total of 163 links for the less than 0.5-mile range and 227 links between the 0.5- to 1-mile range were further evaluated in the Spatial Roadway Gap Analysis ( Figure 3 ).
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