Services Offered:

Traffic Modeling

GIS Networks

Traffic Impact Analysis

ITS Plans

Bus, Subway Surveys

Pedestrian Studies

Parking Studies

Bicycle Studies

Accident Analyses

Roadway/Transit Improvements

Truck Route Plans

M&PT Plans

Taxi Operations

Airport Access Studies

User Surveys

Noise Measurements

Noise Impact Assessments

Air Quality Analysis

Computer Aided Design

Traffic Counts


What are the critical corridors in the NY/NJ/CT metropolitan area for implementation of Intelligent Transportation Systems?

How should the reconstruction of the Triborough Bridge be phased for the least disruption to regional traffic flow?

Is the proposed realignment of the local roadway network sufficient to accommodate a major expansion of LaGuardia Airport?

How can a traffic circle in Middlesex County, New Jersey, that is already at capacity, be redesigned to handle another 500 trucks serving a proposed waste-to-energy facility?

What is the best way to redesign the Manhattan approach to the Brooklyn Bridge to be safer for pedestrians and bicyclists?

What incentives are most effective for increasing transit use?

Nearly every new project affects the transportation system--by increasing traffic volume, truck activity, transit use, parking needs and pedestrian flow, or by changing the pattern of existing traffic and transit operations. All of these changes provoke governmental scrutiny, public concern and, often, controversy.

In connection with such projects, Konheim & Ketcham performs all the steps necessary for comprehensive transportation analyses. In the field, we measure traffic volume and classify vehicle types, record turning movements, perform speed-delay runs, and survey pedestrian flow and transit use. We conduct origin/destination and travel surveys to improve our ability to forecast trips generated by a proposed project and nearby future projects, and to enable more reliable estimates of travel modes, times and destinations. And we perform detailed accident and parking studies.

To analyze existing and future levels of service on roadways and intersections, K&K uses computer models, such as TRANPLAN, NETSIM and CORFLO. We have adapted Highway Capacity Manual procedures to assess impacts on public transit, stairways and sidewalks. Where an unacceptable deterioration in conditions is predicted, we may recommend physical changes in structures, or modifications of the operation of streets, stairways or transit service to reduce or eliminate the adverse effect. We also investigate applications of Intelligent Transportation Systems to improve operations and facilitate intermodal travel. To mitigate adverse conditions during construction, we employ traffic modeling to prepare and evaluate Maintenance and Protection of Traffic plans, including work zone plans for bridge and road reconstruction.

The firm has performed complex traffic studies to meet the standards of New York City Environmental Quality Review, considered to be the most rigorous in the nation. Some state projects involve Clean Air Act conformity analyses; others call for preparation of specifications for noise barriers. Quantifying, assessing and mitigating transportation-related air quality and noise impacts are among Konheim & Ketcham's principal services. Typically, these analyses are the most exhaustive parts of environmental impact statements.

Konheim & Ketcham also has creative transportation planning capabilities. Programs begin with extensive consultation with the people most affected by proposed actions, who frequently have excellent insight into the causes of the problems they experience. Individual interviews and opinion research are two methods we use to test the practicality of measures under consideration in complex transportation plans. We work effectively with advisory groups and manage public outreach projects, using innovative tools such as the Internet, to improve transportation decision-making.

Increasingly, K&K is employing geographic information systems (GIS) to build and maintain multi-level databases and to analyze spatially-organized data for transportation planning and analysis projects. GIS-generated maps display relevant demographic and land use information, proposed construction projects, and physical and operational characteristics of the highway and transit network in the NY/NJ/CT metropolitan area.

The firm encourages its professional staff to contribute their expertise to policy-making organizations, such as the NY Metropolitan Transportation Council, and to undertake research into cutting edge issues such as least-cost transportation planning. K&K's president serves on the Board of Directors of ITS-NY and is active in the Women's Transportation Seminar. Several staff contribute to sessions of the Transportation Research Board and the Institute of Transportation Engineers. A K&K staff member also holds a teaching position at the New Jersey Institute of Technology in geometric design of transportation facilities.