About Us

TEC is a premier traffic engineering, civil engineering and surveying firm providing comprehensive analysis, design, operational and inspection services to help clients meet their complete project needs and goals. Our project experience is richly diverse and includes award-winning local and international projects, DOT projects and task orders, and major development work.

TEC has won accolades for creative engineering solutions – including our proprietary intelligent transportation tools (ReACTS, SSVS, Mobile PTZ) for traffic monitoring and analysis that have demonstrated real results in improving traffic safety and congestion.

With more than 26 years in business and more than 3,500 projects completed, TEC has the knowledge, experience and resources to provide winning solutions to your transportation challenges.

Primary Services

Traffic Signals

  • Traffic signal system design
  • Operations and maintenance
  • Communication/interconnect
  • Signal timing optimization
  • Pedestrian facilities

Roadway Design

  • Roadway design
  • Multi-use path design
  • Streetscapes
  • Right of way plans
  • Utility design (water/sewer)

Intelligent Transportation Solutions

  • Operations and maintenance
  • ITS studies
  • Fiber optic interconnect design
  • Dynamic Message Signs

Asset Management Inventory

  • Signage inventory
  • Pavement condition rating
  • Roadside hazard inventory
  • Maintenance plan
  • Customized databases

Traffic Signal and Lighting Inspectors

  • IMSA and ODOT certified inspectors
  • Quality/constructability plan review
  • Construction material specifications compliance


  • Topographic/boundary survey
  • Right of way plans
  • GPS survey
  • ALTA survey
  • GIS survey

Roadway and Highway Lighting

  • Decorative and conventional
  • Bridge and tunnel lighting
  • High mast lighting
  • Photometric analysis
  • Voltage drop calculations

Engineering Studies

  • Crash analyses/safety studies
  • Traffic impact studies
  • Interchange studies
  • Origin and destination studies
  • Customized databases


  • Basic traffic signal design
  • Traffic signal system design
  • Complex and non-complex roadway design
  • Complex and limited highway lighting design
  • Complex and limited right of way plan development
  • Safety studies
  • Interchange modification/justification studies
  • Bicycle facilities and enhancement design
  • Cost accounting system – unlimited
  • Construction inspection – traffic and electrical
  • Rural roadway design
  • Urban roadway design
  • Traffic engineering services
  • Electrical engineering services
  • Traffic data collection
  • ITS/central concepts
  • Feasibility studies
  • ITS/concepts development
  • ITS/systems deployment
  • ITS/communications planning and development
  • ITS/management and operations
  • ITS/technology/Systems evaluation
  • Congestion management
  • Complex traffic capacity and operations analysis
  • Traffic data collection
  • Traffic forecasting
  • Non-complex traffic capacity and operations analysis
  • Traffic safety analysis
  • Non-complex roadway design
  • Traffic signal design
  • Traffic signal system design

Meet Our Team

Rihab Saleh
President & CEO

Ali Saleh, PE
President of International Operations

Edward Williams, PE, PTOE
Vice President

Michael Hafner, PE, PTOE
Vice President of Engineering

Anne Rahall
Marketing Coordinator

Sandy Roark
Marketing Director

Company Certifications and Affiliations

TEC is proud to be a part of the following associations: