Certified DBE, MBE and HABE, SBE, ESBE and HUB

Transportation and Traffic Engineering Services Offered:

The Dougherty Engineering Group, PLLC offers Transportation and Traffic Engineering Services in the San Antonio Area that include but are not limited to the following: Small and Large Sign Design, Striping (Urban and Freeway) Design, Signal Design, Flashing Beacon Design (Overhead and Roadside), Illumination Design, Rail Road Signal and Rail Road Replanking Design, Minor Roadway Design, Guardrail Design, Traffic Control Plans, and Complete Sets of Plans, Specifications and Estimate (PS&E), Traffic Signal Warrant Studies, Traffic Impact Analysis Studies, Speed Zoning Studies, Traffic Engineering Studies, SignCAD Design Layouts for Signs, QC/QA Review of Plans, Construction Estimates for Traffic Design Projects, and Construction Submittal Reviews of Signs, Pavement Markings and Signal Projects.

TxDOT Pre-Certs:

4.1.1 Minor Roadway Design

7.1.1 Traffic Engineering Studies

7.2.1 Highway-Rail Grade Crossing Studies

7.3.1 Traffic Signal Timing

7.4.1 Traffic Control Systems Analysis, Design and Implementation

7.5.1 Intelligent Transportation System

8.1.1 Signing, Pavement Marking and Channelization

8.2.1 Illumination

8.3.1 Signalization

8.4.1 ITS Control Systems Analysis, Design and Implementation

8.5.1 Highway-Rail Grade Crossings

11.1.1 Roadway Construction Management and Inspection

We have the experience:

The DE Group brings over 19 years of experience in the design of surface transportation and traffic engineering projects, construction management of transportation and traffic engineering projects and design project management. The DE Group is responsible for developing, designing and managing PS&E for various traffic signal, flashing beacon, illumination, signing, striping and Intelligent Transportation Systems (ITS) projects with TxDOT in the Laredo District and the San Antonio District.  The overall experience includes design and project management for major signal designs for rural, urban and arterial projects including isolated traffic signals, diamond signalized intersections and signalized corridors; traffic engineering studies and analyses including signal warrants, speed zone studies and signal timings; signing and pavement markings; signalization and illumination; utility facilities and coordination; contract negotiations; construction cost estimates; preparation of final PS&E; QA/QC, construction management including performing pre-construction meetings, managing construction inspection, reviewing and approving construction submittals, record keeping, diaries, monthly estimates, change orders and final project acceptance for Federal, State, City, and County traffic construction projects funded or overseen by TxDOT.

The DE Group has over 19 years TxDOT experience, and they are familiar with the City of San Antonio, Bexar County, City of Laredo, Webb County and other Municipalities' design and construction guidelines.  


Feel Free to Contact Us via E-mail or phone

Drop us a line!

Better yet, see us in person!

We love our customers, so feel free to visit us during normal business hours or feel free to call us to set up an appointment.

Dougherty Engineering Group, PLLC

(210) 291-8453


Monday - Friday: 9am - 5pm

Saturday: By appointment

Sunday: Closed