• +602.266.7983
  • info@swte.us

Our Expertise

Southwest Traffic Engineering, LLC (SWTE) is an Arizona-based Traffic Engineering firm providing comprehensive Traffic Engineering Design and Transportation Planning/Analysis services on a regional level. Founded in 2003 by Andrew Smigielski SWTE is comprised of professional engineers holding registrations in Arizona, New Mexico, Colorado, Nevada and Utah. Our firm’s exclusive focus on Traffic Engineering design and analysis affords us the unique opportunity to offer our clients focused, expert service, and results. SWTE’s values as a company focus on the communities we live and work in.  As an Arizona Firm with families that work, live and play in our State, SWTE recognizes that we serve not only the citizens of the communities we work in, but also its visitors. Infrastructure plays a very visible role in the daily lives of our citizens and can make lasting impressions on visitors. In order to do this at the best level, SWTE specializes in Traffic Engineering analysis and design, and prides itself on the knowledge that our staff is specifically trained in, and receives ongoing training in Traffic Engineering skills. Our team does not ‘dabble’ in roadway engineering, drainage, or other skill areas. We have established long term relationships with engineering firms that specialize in specific disciplines outside of traffic engineering and are never afraid to utilize their knowledge and skills. SWTE’s philosophy is that the community is our ultimate client by entrusting us to create safe and effective plans that have positive impacts on Arizona communities. Arizona communities that have allowed SWTE to become a leader in our field and we are more than willing to support them in return.

Traffic Engineering Design

Traffic Signal • Traffic Signal Systems • Traffic Calming • Roadway Signing and Pavement Marking • Roadway Lighting • Traffic Control • Pedestrian Path Lighting • Modern Roundabouts • Intelligent Transportation Systems (ITS) • Technical Review

Transportation Planning/Analysis

Traffic Impact Analyses • Parking Analyses • Safety Analyses • Pedestrian Circulation Evaluation • Transportation Modeling • Corridor Studies • Access Management Development • Design Concept Reports • Transit Planning • Alternative Transportation Modes • Bicycle Route Planning • TransCAD Demand Modeling • Technical Review

Alternative Delivery Methods

Design-Build • CM@Risk • Job Order Contracting (JOC)

Latest News

Keeping you up to date.

March 11, 2015 No Comments

SWTE Ranked top 10 in Ranking Arizona 2015

Southwest Traffic Engineering, LLC made the top 10 in Ranking Arizona 2015 in the Engineering: Civil, 13 Engineers of Fewer

March 10, 2015 No Comments

SWTE Cleans Up SR-74 3-4

Since 2011, SWTE employees have participated in the ADOT Adopt a Highway Program. SWTE’s employees participate in safe litter removal along SR74 Milepost 3 to 4. All employees take pride in helping keep our state clean and beautiful

September 19, 2013 No Comments

SWTE Celebrates 10 Years!

  September 19, 2013 SWTE celebrates 10 Years of providing Traffic Engineering Service to Arizona as the number one pure Traffic Engineering Firm in the Valley! Thank you to all of our clients and continuous community support!

Our Clients

As a firm that has completed both private and public projects throughout Arizona, we are familiar with not only many of the guidelines and standards for agencies in Arizona, but also have established relationships with their staff. SWTE is able to offer multiple traffic engineering-teams who are able to work on separate traffic engineering tasks within one project (e.g. ITS design team, traffic control design team).  By having the capability of providing multiple internal teams working on the Traffic Portions of a project, SWTE is able to provide quality analysis and design for projects without over burdening a typical Traffic Engineering team staff of two to four people.