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Traffic impact studies | GIS services | Master Planning | Transportation Modelling

Arterials is a transportation consultancy specializing in integrated planning, traffic engineering, GIS analysis, and mobility modeling. We support better movement, safer infrastructure, and long-term urban growth.

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Planning and Engineering Topics

• How to Count Traffic from Video (AI Traffic Video Analytics Guide)
  The Challenge of Counting Traffic from Video Counting vehicles from video footage is a standard part of traffic studies, but it’s also one of the most time-consuming. Whether you’re working on, a Traffic Impact Assessment (TIA), an… Read more: How to Count Traffic from Video (AI Traffic Video Analytics Guide)
• How to Extract LOS Tables from Synchro Reports (Step-by-Step Guide)
  Traffic analysis using Synchro often involves reviewing detailed output reports to assess intersection performance. While Synchro provides comprehensive results, extracting Level of Service (LOS) data and organizing it into a clean, report-ready table can be a time-consuming… Read more: How to Extract LOS Tables from Synchro Reports (Step-by-Step Guide)
• Traffic Impact Study (TIA Categories and Thresholds)
  Categories, Study Levels, and Memo vs Report Requirements Across Jurisdictions Traffic Impact Assessments (TIAs) are a core component of development review, but requirements vary significantly by jurisdiction. While thresholds like “100 peak hour trips” are commonly cited,… Read more: Traffic Impact Study (TIA Categories and Thresholds)
• How to Conduct a Parking Survey: Techniques, Metrics, and Best Practices
  Parking surveys are an essential tool for transportation planners, traffic engineers, and urban designers. Whether you’re evaluating a busy downtown street, a shopping center lot, or a mixed-use development, understanding how vehicles use parking spaces can inform… Read more: How to Conduct a Parking Survey: Techniques, Metrics, and Best Practices
• What to Do When ITE Trip Generation Data is Limited or Unreliable
  The ITE Trip Generation Manual 12th Edition provides both fitted curve equations and average trip rates for estimating trip generation. However, not all datasets are equally reliable. In many cases, there is either limited data points, or… Read more: What to Do When ITE Trip Generation Data is Limited or Unreliable
• Traffic Calming Strategies: Making Streets Safer and More Livable
  What is Traffic Calming? Traffic calming refers to a range of design strategies and measures used to reduce vehicle speeds, improve road safety, and enhance the overall environment for pedestrians and cyclists. At its core, traffic calming… Read more: Traffic Calming Strategies: Making Streets Safer and More Livable
• Turning Lane and Auxiliary Lane Design: Warrants, Criteria, and Best Practices
  One of the most common questions in traffic impact assessments (TIAs) is whether to propose turning lanes, acceleration lanes, or deceleration lanes. While adding lanes may seem like a straightforward solution to congestion, proposing them without justification… Read more: Turning Lane and Auxiliary Lane Design: Warrants, Criteria, and Best Practices
• Road Classification in Transportation Planning
  Road classification (or class) is a fundamental concept in transportation planning and traffic engineering. It provides a framework for organizing roads according to their function within the transportation network, specifically how they balance mobility (moving traffic efficiently)… Read more: Road Classification in Transportation Planning
• Lost Time and Lost Time Adjustments in Synchro
  In signalized intersection analysis, few parameters influence results as strongly and as quietly as lost time adjustment. When using Synchro or applying the Highway Capacity Manual (HCM) methodology, adjusting lost time can significantly change: Because of this… Read more: Lost Time and Lost Time Adjustments in Synchro
• Lane Utilization Factor and Saturation Flow Rate in Signalized Intersections
  When performing signalized intersection analysis in tools such as Synchro or HCS, two commonly misunderstood parameters are Lane Utilization Factor (LUF) and Saturation Flow Rate (s). Both directly influence delay, capacity, and level of service calculations under… Read more: Lane Utilization Factor and Saturation Flow Rate in Signalized Intersections
• Using Pedestrian Counts in Traffic Engineering
  Pedestrian counts are an essential input for intersection analysis (the main element in Traffic Impact Studies), particularly when modeling signalized intersections in software such as Synchro, Sidra, or VISUM. Unlike vehicle counts, pedestrians interact differently with traffic… Read more: Using Pedestrian Counts in Traffic Engineering
• How to Conduct Accurate Traffic Counts for Traffic Impact Studies
  Traffic counts are the foundation of any Traffic Impact Assessment (TIS/TIA) and even Transportation Master Plans. Accurate traffic data ensures that intersection analyses, turning movements, and operational recommendations are reliable and defensible. This guide provides professional best… Read more: How to Conduct Accurate Traffic Counts for Traffic Impact Studies
• Swept Path Analysis and Vehicle Tracking in Traffic Impact Studies
  Swept path analysis (also referred to as vehicle tracking) is a core technical component of traffic engineering and site access review. It evaluates whether design vehicles can safely and realistically maneuver through intersections, site accesses, parking areas,… Read more: Swept Path Analysis and Vehicle Tracking in Traffic Impact Studies
• Bluebeam vs Adobe vs Other PDF Tools: What Engineers and Transportation Planners Should Actually Use
  In engineering, planning, and infrastructure consulting, PDFs are a primary working format. Traffic impact studies, drawings, markups, review comments, and agency redlines are all typically exchanged, reviewed, and approved in PDF form. Yet many firms still rely… Read more: Bluebeam vs Adobe vs Other PDF Tools: What Engineers and Transportation Planners Should Actually Use
• Standard Geometries in Road and Highway Design: Quick Reference
  Designing streets and highways requires careful attention to geometric standards. Lane widths, sidewalk sizes, medians, and other roadway elements affect safety, efficiency, and comfort. This guide provides a comprehensive reference for planners and traffic engineers, including typical… Read more: Standard Geometries in Road and Highway Design: Quick Reference
• Complete Streets: Designing Roads for Everyone
  In modern urban planning, streets are no longer just about moving cars efficiently. A Complete Street is designed to safely accommodate all users; drivers, pedestrians, cyclists, transit riders, and people with disabilities. By prioritizing accessibility, safety, and… Read more: Complete Streets: Designing Roads for Everyone
• Transportation & Traffic Engineering Abbreviations: Quick Reference Glossary
  This glossary provides a comprehensive reference of commonly used abbreviations in transportation and traffic engineering. It covers terminology relevant to traffic studies, transportation planning, pavement design, and transit operations. Each entry includes a concise definition, with links… Read more: Transportation & Traffic Engineering Abbreviations: Quick Reference Glossary
• ArcGIS Pro vs QGIS: Which GIS Software Should Students and Young Professionals Learn?
  Geographic Information Systems (GIS) are a core technical skill across urban planning, transportation engineering, environmental management, infrastructure development, and spatial data science. For students and young professionals entering the geospatial industry, one of the most common questions… Read more: ArcGIS Pro vs QGIS: Which GIS Software Should Students and Young Professionals Learn?
• How to Estimate / Calculate Construction Traffic for Pavement Design
  When designing roads, access drives, or service lanes around a development, engineers often focus on long-term operational traffic. However, in many projects, the most damaging traffic occurs during construction, not after completion. Heavy dump trucks, concrete mixers,… Read more: How to Estimate / Calculate Construction Traffic for Pavement Design
• Green Time vs Effective Green Time: What’s the Difference?
  Signalized intersections are at the heart of urban mobility. To optimize traffic flow, planners and engineers must understand key signal timing concepts—two of the most important being Green Time and Effective Green Time. Although they sound similar,… Read more: Green Time vs Effective Green Time: What’s the Difference?