Well-designed signal systems reduce delay, improve operations, and support corridor performance. TJW provides full-service traffic signal design, system upgrades, communications, operational analysis, and signal timing optimization to modernize intersections and accommodate evolving mobility needs. 

Services include:

• Custom traffic signal design
• Controller and communication system upgrades
• Timing improvements that enhance flow and reduce emissions

TJW provides active transportation analysis and design services to support bicycle and pedestrian improvements on existing and planned roadways. Services include evaluation of circulation and operational impacts, preparation of traffic and circulation impact reports, and development of design solutions that integrate active transportation while maintaining appropriate vehicle operations.

Services include:

• Analysis of circulation and operational impacts
• Design of Class I, Class II, Class III, and Class IV bikeways
• Bicycle signal design and detection at signalized intersections
• Coordination with traffic signals, signing and striping, and roadway geometry
• Designs consistent with MUTCD, Caltrans, and local agency standards

Effective improvements begin with understanding existing conditions and risk factors. TJW conducts detailed collision and safety studies to identify trends, evaluate operational performance, and develop engineering-based recommendations.

Capabilities include:

• Crash data evaluation and pattern analysis
• Safety recommendations aligned with best practices
• Pre- and post-implementation effectiveness reviews

Construction and maintenance activities require thoughtful traffic management to support reasonable operations for workers and the traveling public. TJW prepares clear, practical TTC plans that minimize disruption while maintaining access and circulation.

Plans include:

• Detour routing and lane closure layouts
• Work zone signing, striping, and delineation
• Safety strategies for crews and the traveling public

Early-stage planning helps ensure roadway improvements integrate with existing infrastructure and agency objectives. TJW develops alignment studies and conceptual designs that support stakeholder coordination and informed decision-making.

Deliverables include:

• Roadway alignment concepts
• Improvement layouts for development and capital projects
• Graphics and exhibits for review and permitting

Clear, MUTCD-compliant signing and striping promote predictable travel and support multimodal operations for motorists, pedestrians, and cyclists.

Services include:

• Signing plans for intersections and corridors
• Pavement marking layouts for lanes, crosswalks, and bikeways
• Multimodal safety and wayfinding enhancements

As travel patterns change, intersections may require updated control strategies. TJW evaluates traffic volumes, delay, and operational characteristics to determine whether signals, multi-way stop control, or roundabouts are warranted under MUTCD criteria.

Deliverables include:

• Warrant evaluations and supporting data
• Analysis of control alternatives
• Recommendations for implementation

TJW provides roundabout design and independent review services for new and retrofit applications. Services include preparation of roundabout layouts as well as validation of consultant-prepared designs to support agency review and approval.

TJW’s approach emphasizes appropriate geometry, speed management, multimodal accommodation, and design vehicle access, consistent with FHWA guidance, the Caltrans Highway Design Manual, and AASHTO criteria.

Services include:

• Roundabout feasibility evaluations and conceptual layouts
• Independent review and validation of proposed designs
• Geometric and design speed evaluation to support speed management
• Sight distance review and truck-turning analysis
• Coordination with roadway, signing and striping, lighting, and active transportation design

TJW supports public agencies and project teams by providing independent traffic engineering plan review services. Plan check efforts focus on verifying consistency with applicable standards, approved design criteria, and operational intent, while identifying potential conflicts or constructibility considerations.

Services include:

• Traffic engineering plan review for public and private development projects
• Review of signing and striping, traffic signal, and active transportation plans
• Identification of operational, coordination, and constructibility considerations
• Review comments and technical support during agency review and approval