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50+ Years
experience
Your Trusted Partner for Transportation Solutions
TJKM is a multi-disciplinary transportation consulting firm with over 45 years of experience delivering innovative solutions for public and private sector clients. Founded in 1974, we specialize in transportation planning, traffic engineering, intelligent transportation systems, and multimodal studies. Our team of dedicated professionals has completed more than 8,000 projects across California, Nevada, and beyond, with a focus on reducing vehicle miles traveled, improving safety, and enhancing sustainability. We maintain offices in Pleasanton, Tampa, and Austin to better serve our clients. Our expertise spans traffic operations, freeway management, signal coordination, and travel demand modeling, supported by a commitment to technical excellence and client satisfaction.

With 85% of our business coming from repeat clients, we prioritize meaningful partnerships and tailored solutions. Our leadership team brings decades of experience in traffic adaptive systems, congestion management, and transportation policy. We are certified as a Disadvantaged Business Enterprise (DBE) and Small Business Enterprise (SBE) in California, with additional certifications from FDOT and TxDOT. Our work on projects like the City of Livermore Traffic Impact Fee program demonstrates our ability to deliver complex initiatives on time and within budget. Through continuous innovation and a focus on stakeholder communication, we remain a trusted leader in transportation solutions.
Services
Adaptive Signal Systems Bicycle and Pedestrian Planning Complete Streets Congestion Management Corridor Studies Freeway Operations ITS Studies Parking Planning Safe Routes to School Traffic Impact Studies
Details
  • Year established: 1974
Highlights and features
  • We offer 45+ years of specialized expertise in transportation planning and traffic engineering.
  • Our team includes certified professionals with experience in traffic adaptive signal systems.
  • We deliver projects on time and within budget, with 85% of business from repeat clients.
  • Our local knowledge combines with national resources for comprehensive transportation solutions.
  • We maintain DBE/SBE certifications and partnerships with state transportation agencies.
Associations and certifications
  • DBE
  • SBE
  • FDOT
  • TxDOT
What people say
Outstanding technical expertise Innovative yet practical solutions Peerless client services Completed on time and on budget Highly recommend TJKM
Services
Adaptive Signal Systems
Our adaptive signal systems use real-time data to optimize traffic flow and reduce congestion. We design and implement intelligent control strategies that respond to changing traffic conditions. With experience in coordinating over 2,000 signals nationwide, our solutions improve travel times and reduce vehicle emissions.
Traffic Impact Studies
We conduct comprehensive traffic impact assessments for development projects and policy decisions. Our studies evaluate existing conditions, predict future traffic patterns, and recommend mitigation measures. Using advanced modeling tools, we help clients meet regulatory requirements while ensuring safe and efficient transportation outcomes.
ITS Implementation
Our ITS solutions integrate advanced technologies to improve transportation efficiency and safety. We design and deploy systems for traffic monitoring, incident management, and real-time control. With expertise in connected vehicle technologies and communication networks, we help agencies modernize their transportation infrastructure.
Complete Streets Planning
We develop complete streets solutions that accommodate all users, including pedestrians, cyclists, and transit riders. Our designs prioritize safety and accessibility while maintaining vehicle mobility. We work with municipalities to create streetscapes that support sustainable transportation and community development goals.
Congestion Management
Our congestion management strategies combine data analysis and modeling to identify bottlenecks and implement effective solutions. We develop corridor-specific plans that may include signal coordination, lane reconfiguration, or ITS deployment. Our goal is to maximize roadway capacity and improve travel reliability for all users.
People
Nayan Amin
President
With 31+ years of experience, Mr. Amin specializes in traffic operations and signal coordination. He has optimized timing plans for over 2,000 traffic signals nationwide and leads major transportation management projects.
Ruta Jariwala
Principal
A 22-year transportation planning expert, Ms. Jariwala focuses on traffic operations and ITS implementation. She has extensive experience in developing optimized signal timing plans for California corridors.
Vamsee Modugula
Director
With 24 years in travel demand forecasting, Ms. Modugula leads transportation modeling projects using CUBE, TransCAD, and EMME software for regional mobility planning initiatives.
Kamlesh Saxena
Director
Mr. Saxena brings 41 years of ITS and transportation technology expertise, specializing in communications systems integration and connected vehicle project design for complex regional deployments.
Erik Bjorklund
Project Manager
With 31 years of design experience, Mr. Bjorklund manages signal design projects and roadway improvements, maintaining strong relationships with Caltrans and Bay Area developers through efficient plan approvals.
Questions
What transportation services does TJKM specialize in?
We specialize in adaptive signal systems, traffic impact studies, corridor planning, ITS implementation, and multimodal transportation solutions.
Which geographic areas does TJKM serve?
We operate from offices in California, Florida, and Texas, serving clients throughout these states and beyond.
Is TJKM certified as a minority-owned business?
We are certified as a Disadvantaged Business Enterprise (DBE) and Small Business Enterprise (SBE) in California.
What experience does TJKM have with traffic signal projects?
Our team has designed and implemented optimized signal timing plans for over 2,000 traffic signals nationwide.
How does TJKM handle complex transportation projects?
We combine local knowledge with national resources to deliver tailored solutions for freeway operations and congestion management.
Reviews (1)
Roger H.
Feb 26, 2021 Report
TJKM is an outstanding consulting firm to work for. Leaders are engaged, determined, fair and have good vision. Work is plentiful and interesting. The company is expanding to more states and that gives more opportunities to smart and energetic professional engineers and planners.