traffic management

Efficient networks take work: Traffic management and Braess’ paradox

By Chris McCahill Not all roads are created equal. In fact, adding certain roads to a system can actually slow down traffic under the right circumstances. This is a fairly well known phenomenon called Braess’ paradox, named after the German mathematician who first wrote about it in 1968.

When Waze clogs the streets, can communities close them to outsiders?

By Sam Sklar The borough of Leonia, NJ, has decided to close most of its local roads to non-residents during peak morning and afternoon periods, the New York Times reports. As Google Maps and Waze (owned by Google) have sent more commuters onto local streets in an attempt to avoid highway

Costs for Pedestrian and Bicyclist Infrastructure Improvements: A Resource for Researchers, Engineers, Planners, and the General Public (Pedestrian and Bicycle Information Center, 2013)

Costs for pedestrian and bicycle safety infrastructure often vary greatly from city to city and state to state. This document (and associated database) is intended to provide meaningful estimates of infrastructure costs by collecting up-to-date cost information for pedestrian and bicycle

Measuring the Street: New Metrics for 21st Century Streets (New York City DOT, 2012)

New York City’s streets are constantly called on to the meet new and varied needs of a growing, dynamic, 21st Century city – and to do this in a complex environment where there is little opportunity to expand the existing  footprint. How do city leaders address these challenges and

SSTI’s scenario analysis tool unveiled; will allow DOTs to better engage with land use authorities

By Bill Holloway Transportation agencies traditionally have to chase land use development, spending scarce funds to provide new roadway capacity, when better land-use patterns could have greatly reduced travel demand. SSTI’s new scenario analysis tool, developed for DelDOT, provides a way for

Reducing congestion – Some examples from FHWA of operational strategies

An FHWA Office of Operations report, 2010 Urban Congestion trends: Enhancing System Reliability with Operations, emphasizes the need for more effective use of innovative traffic management and operational strategies. The report details successful strategies states and communities are