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Archive for the ‘Congestion’ Category

Global Traffic Scorecard

Monday, February 12th, 2018
Worldwide Traffic Study - Global Traffic Scorecard - INRIX research

The INRIX 2017 Traffic Scorecard is the largest and most detailed study of congestion to date. It includes data on 1,360 cities in 38 countries covering more than 100,000 square miles (250,000 square kilometers) of road and focuses on congestion across all times of the day and week. It confirms, as previous INRIX Traffic Scorecards have found, that congestion is a significant and growing burden on our cities. It is clear that congestion is a global phenomenon, and impacts businesses as well as commuters, small cities as well as large ones and developing as well as developed economies.

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Falling Transit Ridership: California and Southern California

Friday, February 9th, 2018
Falling Transit Ridership in California: Figure ES-1

In the last ten years transit use in Southern California has fallen significantly. This report investigates that falling transit use. We examine patterns of transit service and patronage over time and across the region, and consider an array of explanations for falling transit use: declining transit service levels, eroding transit service quality, rising fares, falling fuel prices, the growth of Lyft and Uber, the migration of frequent transit users to outlying neighborhoods with less transit service, and rising vehicle ownership. While all of these factors probably play some role, we conclude that the most significant factor is increased motor vehicle access, particularly among low-income households that have traditionally supplied the region with its most frequent and reliable transit users.

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Oregon DOT: Managing Congestion with Value Pricing

Wednesday, January 24th, 2018

The Portland-Metro area has a congestion problem and it’s getting worse. The Oregon Department of Transportation is conducting an analysis to study options, including value pricing also know as congestion pricing, for managing congestion. Learn what this is and how you can participate in the discussion with this video intro.

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2017: The Year in Infrastructure

Wednesday, January 3rd, 2018
2017: The Year in Infrastructure

2017 was, by many accounts, a turbulent year. Infrastructure was no exception.

Whether due to new political paradigms, unprecedented natural disasters or new funding opportunities, American infrastructure faced a wide range of challenges throughout the year. Here, we recount some of the key infra topics that shaped discussion–and action–in 2017.

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Resilience and efficiency in transportation networks

Friday, December 29th, 2017
Fig. 1. Definition of urban areas and assignment of nodes’ population.

It is widely understood that roadway infrastructure is expensive, both in acquiring land for rights-of-way and in construction of improvements, and thus, decisions regarding alignment, crossing, and access made over a period of decades may have long-lasting consequences that are observable in traffic data today. Consequently, urban areas exhibit different unintentional traffic characteristics, including delays under normal and random stress conditions. Investments motivated exclusively by expected efficiencies under normal operating conditions are unreliable safeguards against loss of efficiency under stress conditions. Therefore, new analytic tools are required that allow designers to assess the adaptive capacity of roadway infrastructure and assess the potential of new investments to provide enhanced resilience.

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Empty Seats, Full Streets: Fixing Manhattan’s Traffic Problem

Tuesday, December 26th, 2017

The rapid growth of app-based ride services such as Uber and Lyft has raised concerns in large U.S. cities such as New York. San Francisco, Chicago and Seattle about their impacts on traffic congestion and public transportation ridership. In New York City, the growth of app-based ride services (often called “Transportation Network Companies,” or TNCs) has raised questions about how anti-congestion plans being developed by Governor Andrew Cuomo and Mayor Bill de Blasio should address TNCs’ contributions to traffic congestion.

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New York City – Unsustainable: Traffic 2018

Friday, December 22nd, 2017

Subway reliability is way down, and the bus system is shedding riders at an alarming rate. And because transit is so unreliable, today New York is accommodating growth in cars, in the form of the tens of thousands of Uber and Lyft vehicles we now find on our streets each day.

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Guest on The Infra Blog: Robert Bolton, Senior Vice President, Arcadis

Tuesday, December 19th, 2017
Robert Bolton, Senior Vice President, Arcadis

We looked at 100 cities on a global basis and not one US city made it into the top 20. The highest ranking city was New York City, and they came in at number 23. Probably the biggest challenge that all of the US cities face is the continued dependency on passenger-car travel. We don’t have nearly as well developed metro systems or transit systems for sharing or using alternative means–whether it’s walking or bicycles or other methods of getting around. That’s the big challenge for the US cities, is to look at how they go about diversifying their transportation options.

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Rising Traffic Volumes Reaffirm the Need for Infrastructure Investment: FHWA

Friday, September 8th, 2017
Federal Highway Administration Logo

The Federal Highway Administration (FHWA) isn’t pulling any punches with the conclusion it draws from the latest figures for U.S. traffic volumes, which show “a streak of steadily increasing vehicle miles travelled (VMT) that began in 2011.”

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The High Cost of Free Parking

Wednesday, August 23rd, 2017

Hidden parking rules hurt our cities. Will Chilton and Paul Mackie of Mobility Lab explain.

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