Engineering Solutions That Move Communities Forward
At PSI, we deliver forward-thinking, data-driven engineering solutions that shape safer, more connected, and more resilient communities. From concept through construction, our multidisciplinary team integrates deep technical expertise with advanced digital tools to deliver high-impact outcomes across every facet of transportation and infrastructure.
Transportation & Civil Design
Designing the physical backbone of mobility with performance, safety, and community impact in mind.
- Roadway Design – Durable, efficient, and tailored to local context – from planning to final construction.
- Streetlight/Traffic Signal Design – Smart, safe systems that enhance visibility, efficiency, and multimodal flow.
- Safety Improvement Design – Targeted interventions that reduce crashes and protect vulnerable road users.
- Signing and Pavement Marking Design – Compliant, long-lasting visibility strategies that guide and protect all travelers.
- Subsurface Utility Design – Integrated designs that prevent conflicts and ensure streamlined delivery.
- ITS Design – Intelligent Transportation Systems that connect infrastructure with real-time data and responsiveness.
- Streetscape Design – Human-centered environments that support livability, walkability, and accessibility.
- ADA/Accessibility Design – Fully compliant, inclusive infrastructure that ensures equitable mobility for all.
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Transportation Planning
Creating data-informed strategies that anticipate demand and support long-term resilience.
- Traffic Demand Modeling – Forecasting travel behavior to inform smarter infrastructure investment.
- Traffic Simulation and Modeling – Diagnosing and improving complex traffic flows with scenario-based modeling.
- Evacuation Planning and Modeling – Scalable, community-specific strategies for emergency response.
- Urban & Regional Planning – Aligning land use, policy, and mobility to support thriving communities.
- Liveability Studies – Evaluating access, equity, and quality-of-life outcomes within transportation networks.

Traffic Engineering
Optimizing systems for safety, operations, and long-term performance.
- Traffic Safety Studies & Countermeasure Design – Identifying risk and applying proven design solutions.
- Warrant Studies – Determining needs for traffic control based on national and local criteria.
- Traffic Impact Studies – Assessing development effects and recommending effective mitigation.
- Pedestrian/Bicycle Planning & Design – Enhancing non-motorized access with safe, accessible infrastructure.
- Signal Timing & Optimization – Improving corridor performance with adaptive timing strategies.
- Traffic Operations Studies & Designs – Enhancing mobility and safety through intersection and corridor design.
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Asset Management
Maximizing infrastructure value with inventory tools and actionable insights.
- Pavement Evaluation – Supporting smarter maintenance and lifecycle strategies.
- ADA Compliance Inventory – Identifying and prioritizing accessibility improvements.
- Sidewalk & Alley Condition Assessment – Evaluating pedestrian and secondary networks to strengthen multimodal connectivity.
- Guardrail & Attenuator Inventory – Managing roadside safety infrastructure for performance and compliance.
- Traffic Sign & Curbside Asset Inventory – Geolocated asset data to drive efficient capital and maintenance planning.

Subsurface Utility Engineering (SUE)
Enhancing design and execution through structured utility discovery, verification, and risk-informed decision-making.
- Integrated Data Collection – Leveraging survey, geophysics, and GIS to produce accurate underground utility maps.
- Stakeholder Coordination – Engaging engineers, surveyors, utility owners, and contractors to ensure complete utility insight.
- ASCE 38-Compliant Deliverables – Providing standardized documentation across four quality levels:
- Quality Level A – Utility Locating: Confirming precise horizontal and vertical positions via test holes.
- Quality Level B – Utility Designating: Mapping horizontal alignments through surface geophysical methods.
- Quality Level C – Records + Surface Survey: Correlating visible features with documented utility records.
- Quality Level D – Records Research: Compiling available records, as-builts, and field-based recollections.
- Proactive Utility Management – Improving project planning, safety, and delivery through early conflict identification and resolution.
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Construction Management & Inspection
Delivering quality, safety, and accountability from groundbreaking to closeout.
- On-site Inspection – Providing real-time field oversight aligned with project standards and client goals.
- Material Testing – Verifying performance and compliance through lab-certified processes.
- Scheduling & Project Controls – Keeping projects on time, within budget, and aligned with stakeholder priorities.
- Construction Documentation – Maintaining accurate records for accountability, reporting, and regulatory compliance.
- Maintenance of Traffic and Traffic Control – Ensuring safe and effective maintenance-of-traffic during construction.
- Constructibility Review – Proactively mitigating risk before construction begins.

Software Development
Turning complex data into powerful, actionable insights for agencies, planners, and the public through custom-built platforms.
- Enterprise Tools & APIs – Building scalable, integrated solutions for operational efficiency.
- GIS & Mapping Platforms – Creating spatial tools that drive smarter planning and analysis.
- Public-Facing Mobile Apps – Connecting travelers with real-time transportation information.
- Advanced Traveler Information Systems (ATIS) – Communicating conditions across all modes and corridors.
- Advanced Transportation Management Systems (ATMS) – Monitoring and optimizing system performance in real time.

Research and Emerging Technologies
Exploring next-generation technologies to inform the future of mobility and transportation infrastructure.
- Connected & Automated Vehicles (CAVs) – Advancing vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication for smarter networks.
- Fusion Data Systems – Integrating multiple data sources to provide holistic mobility insights.
- Traffic Forecasting Models – Predicting conditions in real time to improve operational decisions.
- Adaptive Signal Control – Developing dynamic, responsive signal systems.
- Machine Learning Applications – Leveraging AI to enhance safety analysis, flow optimization, and predictive modeling.
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Craft Your Next Project with Us
We’re passionate about shaping the future of cities and mobility through precision, innovation, and care. Whether you’re looking to optimize a single corridor or reimagine an entire network, PSI brings the tools, talent, and technology to deliver results.
