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The Effects of Public-Private Partnerships on Traffice Safety: Evidence from Mexico

The use of public-private partnerships (PPPs) worldwide to facilitate private-sector participation in a variety of transportation infrastructure delivery tasks is growing. Tasks increasingly allocated to the private sector include the design, construction, operation, maintenance, and financing of large transportation facilities. Although academic literature on PPPs is burgeoning, there has been little empirical examination of the effects of private operation and maintenance of roads on road safety.

Analysis of Environmental and Infrastructure Impacts of Transportation Activities Associated with High Volume Horizontal Hydraulic Fracturing Operations in the Marcellus Shale Formation Using the Geospatial Intermodal Freight Transport (GIFT)

The natural gas extraction method, High-Volume Horizontal Hydraulic Fracturing (HVHF), has a significant transportation component that impacts transport infrastructure and rural communities in both positive and negative ways. Estimates provided by the US Energy Information Administration put natural gas reserves of the entire Marcellus Shale formation, our area of interest, at 410.3 trillion cubic feet. The New York State Department of Environmental Conservation estimates each Marcellus Shale well will require 625-1148 one-way truck trips for equipment, materials, and waste movement.

Robotic Inspection of Bridges Using Impact-echo Technology

During the first year of the project, we integrate an impact-echo device with a mobile robot for automatic NDT inspection of bridge decks to generate a 2D/3D map showing flaws. We found from field test that most of the bridge decks have groove surfaces to enhance the friction of the vehicles on the bridge. The current Impactecho device we used doesn’t work well in groove surfaces even if it is used in manual operation.

High Visibility Reflective Sign Sheeting Evaluation

Highway signs are a critical part of the roadway infrastructure, providing important information to drivers to assist in navigation, identify potentially hazardous roadway locations, and to remind drivers of safe operating practices. Ensuring that signs have sufficient visibility to the driving public is a key undertaking by transportation agencies such as NYSDOT.

Effectiveness-Based Pavement Preservation Selection Based on Statistical Analysis of Long Term Pavement Performance Data Research Brief

This study compared the effectiveness of preservation treatments on pavement surface friction and investigated the long-term variation of friction using the data collected in the Specific Pavement Studies-3 (SPS-3) of the Long Term Pavement Performance (LTPP) program. The SPS-3 focuses on the effect of four preservation treatments (thin overlay, chip seal, crack seal, and slurry seal) on pavement performance under five design factors (traffic, precipitation, temperature, existing pavement condition, and subgrade type).

Impact Analysis of Recreational Transit Services on Local Community Economic Development, Employment and Spending

Public transit service provided by NJ TRANSIT is used throughout the state of New Jersey by a large number of persons to visit recreational activities. Such activities include beach-related recreation and amusement, sporting events, concerts, and various types of shows and other events.

Assessing Behavior Changes Under The Influence of Travel Demand Management Strategies

In order to achieve an efficient transportation system, proper demand management strategies are more critical than increasing facility capacity. Previous studies suggest that most of the strategies have substantial impacts on traffic pattern and travel behaviors, but the effects may not be exactly the same as they were initially expected to be. This project focuses on assessing travel demand management strategies to enhance such understanding.

Freight Tricycle Operations in New York City

As cities become more congested and increasingly focused on sustainability, cargo cycles offer a potential alternative to motorized vehicles for local and last-mile goods delivery. However, few studies have examined this mode in the North American context. This project seeks to address this existing gap in research on cargo cycles/freight tricycles in North America and in New York City (NYC).

Subsurface Imaging of Corrosion in Painted Steel Bridges

According to a comprehensive study conducted in 1998 by CC Technologies, corrosion to the US economy was $276 billion or 3 % of the 1998 GDP (FHWA-RD-01-156). From that amount, $121 billion was spent on corrosion control and $107 billion was spent on protective coatings alone. CC Technologies reported that better corrosion protection could save up 40% of that cost.

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