Question: What are the types of intersections that Vistro can analyze?
Answer: Vistro analyzes Signals, Two-way Stops, All-way Stops and Roundabouts.
Question: Can Vistro analyze other types of interchanges such as SPUI or DDI or maybe a CFI?
Answer: Yes, Vistro can model these alternative intersection types. We will show how to do this in a later PTV Talks session.
Question: What analysis methodologies does Vistro calculate?
Answer: Vistro calculates the following methodologies: Highway Capacity Manual (HCM) 6th Edition, HCM 2010 and HCM 2000, the Canadian Capacity Guide (CCG) 3rd Edition, Intersection Capacity Utilization (ICU), Circular 212 Planning method, and the Kimber method.
Question: Can Vistro be adapted for local conditions?
Answer: Yes, there are many parameters that are editable to allow users to replicate local conditions. Additionally, Vistro can analyze either right-hand drive or left-hand drive conditions.
Question: Can Vistro analyze multiple scenarios?
Answer: Yes, this will be covered in detail in a future PTV Talks session. Multiple scenarios can be defined and managed in a single file through Vistro’s intuitive scenario manager.
Question: Does Vistro perform signal timing optimization?
Answer: Yes, this will be covered in detail in a future PTV Talks session. Vistro performs local or network-wide signal optimization. The network optimization includes route-based optimizations and user-defined weighting of both performance criteria components and route prioritization.
Question: Does Vistro have a time-space diagram? Is it easy to edit?
Answer: Yes, this will be covered in detail in a future PTV Talks session. Vistro provides a time-space diagram and users can slide offset values to adjust green bands interactively.
Question: Where does Vistro fit regarding Macro/Meso/Micro analysis tools?
Answer: Vistro is in the deterministic/analytic transportation analysis tool category (refer to FHWA Traffic Analysis Toolbox for definitions). Vistro can then be exported in to Vissim (microsimulation) or Visum (macro level analysis). Both Visum and Vissim have mesoscopic analysis options.
Question: Does Vistro allow for importing/exporting? What are the types of data that can be imported or exported?
Answer: Yes, Vistro allows for many imports/exports.
Imports include: Volume data (CSV), Open Street Map (OSM) data, Synchro data, and Visum data.
Exports include: Volume data (CSV), ANM and RBC files to Vissim, SVG and HTML files.
Question: Can Vistro perform transportation impact analysis?
Answer: Yes, this will be covered in detail in a future PTV Talks session. Vistro performs trip generation, distribution and assignment to allow analysis of trips added from one or many site locations for multiple scenarios.
Question: What output reports does Vistro provide?
Answer: Vistro creates detailed reports, including report-ready tables and graphical figures.
Tabular reports include: Intersection Analysis Details and Summary, Turning Movement Volumes, Fair-Share Volumes and Percentages, Signal Warrants, Trip Generation, Trip Distribution, Trip Assignments.
Graphical reports include: Study Intersections, Lane Configurations, Traffic Volumes (Base, In-process, Future Background, Net-New Site, Other, Future Total), Traffic Conditions, Time-Space Diagrams (Flowing Off, Arterial Bands – both one-way and two-way), Fair-share Volumes, Fair-share Percentages).
Additionally, there are many on-network graphics that can be shown in Vistro, which can also be reported either through export (to SVG, HTML) or via screen capture.
Question: What background images does Vistro support?
Answer: Vistro provides a native satellite image feed from Bing that is the default. Open Streets Map can also be selected. Additionally, background images of the following formats can be inserted: .emf, .wmf, .bmp, .dwg, .dxf, .ecw, .jp2, .jpg, .png, .sid, .svg, .tif, gif.