Kevin L. Johnson, PE
— Traffic Planning and Design, Inc.

Traffic Planning and Design, Inc. provides the following services to our clients: Highway Design; Bridge Design & Inspection; Transportation Planning & Permitting; Traffic Signal & ITS Systems Design; Construction Management & Inspection; Multimodal, Complete Streets & Mobility Services; Environmental Services & Permitting; Transportation Management & Operations; and Expert Witness Support for Crash Investigations.

Due to this level of civil engineering expertise, many of our engineers serve as professional expert witnesses for accident cases. Specifically TPD President, Kevin Johnson, PE, who has served as an expert witness on a multitude of cases throughout Pennsylvania, New Jersey, Delaware, including testimony in Commonwealth Court in Chester, Delaware, Montgomery, and Philadelphia Counties, as well as in United States District Court. He has prepared/managed traffic impact and parking studies, traffic signal designs, Work Zone Traffic Control designs and highway and intersection designs for over 2,000 projects. He has also prepared over 60 expert witness reports for accident cases involving highway design, traffic signal design/operations/maintenance, Work Zone Traffic Control, pedestrian access/circulation, parking lot design, street lighting, roadside obstructions, traffic operations, signage, drainage design, etc.

Mr. Johnson employs a staff of 12 additional experts to cover such areas as bridge design; road construction techniques, practices and training; road maintenance practices, procedures and training; winter maintenance such as snowplowing, sign management and maintenance procedures; noise and wetland mitigation; and more.

In addition to serving Pennsylvania, New Jersey and Delaware, TPD has provided expert witness services for clients in Connecticut, New York, Virginia, South Carolina, Illinois, Connecticut, Missouri, and New Hampshire.

Our experts have experience with cases involving the following:

Work Zone Traffic Control

• Lane Closures (short- & long-term)
• Interchanges
• Detours (Vehicles & Bike/Ped)
• Night Time Work Zone Traffic Control
• Flagging Operations

Highway Safety

• Highway & Bridge Design
• Utility Pole Placement
• Highway Lighting
• Highway Drainage
• Sight Distance
• Clear Zones
• Lane Marking
• Signage
• On-Street Parking
• Motorcycles

Highway & Bridge Maintenance

• Sign Maintenance/Replacement
• Winter Maintenance
• Highways
• Bridges
• Traffic Signals
• Parking Lots
• Repaving
• Pavement Rutting
• Pothole Repair
• Manholes
• Roadside Vegetation Management

Bicyclists/Pedestrians

• Mid-Block Ped Crossings
• Intersection Crossings (Signalized & Unsignalized)
• ADA
• Blind & Visually Impaired
• School Zones
• Parking Lots/Parking Garages

Construction Management/Construction Methods

• Contracts/Claims/Cost Estimates
• Responsibilities of Project Owner/Designer/Construction Manager/Construction Inspector/Contractor

Traffic Signal Design, Operations & Maintenance

At-Grade Rail Crossings

Educational Facilities

• Parking Lot & Internal Circulation Design
• Pedestrian Crossings
• Safe Routes to School
• School Zones

Commercial Establishments

• Sidewalks
• Bollards
• Internal Circulation
• Parking Lot Design
• Curb Stops
• Fire Lanes
• Loading Docks/Zones