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Innovative Roadway Light Source and Dye Combinations to Improve Visibility and Reduce Environmental Impacts

Sky glow light pollution is caused largely by reflected light off of roadway and other surfaces. The authors investigated the feasibility of a system consisting of a specialized LED streetlight and a dyebased roadway surface coating that would reduce sky glow, but still provide adequate illumination of objects in the road. As envisioned, the streetlight would produce white light with narrow-band LEDs of red, green, and blue wavelengths.

Automating Web Collection and Validation of GPS data for Longitudinal Urban Travel Studies

Traditional paper and phone travel surveys are expensive, time consuming, and have problems of missing trips, illogical trip sequences, and imprecise travel time. GPS-based travel surveys can avoid many of these problems and are becoming increasingly popular in major cities worldwide. However, methodologies have not been developed to catch up with the enormous amount of data generated by the GPS.

Using Lighting And Visual Information To Alter Driver Behavior

Inappropriate traffic speeds are a major cause of traffic fatalities. Since driving is a task with a substantial contribution from vision, the use of lighting and visual information such as signage could assist in providing appropriate cues to encourage appropriate driving speeds. At locations such as sharp roadway curves, an overall reduction in driving speed might be desirable to prevent rollover crashes.

Dynamic User Equilibrium Model for Combined Activity-Travel Choices Using Activity-Travel Supernetwork Representation

Integrated urban transportation models have several benefits over sequential models including consistent solutions, quicker convergence, and more realistic representation of behavior. Static models have been integrated using the concept of Supernetworks. However integrated dynamic transport models are less common. In this paper, activity location, time of participation, duration, and route choice decisions are jointly modeled in a single unified dynamic framework referred to as Activity-Travel Networks (ATNs).

A Prototype Decision Support System for Optimally Routing Border Crossing Traffic Based on Predicted Border Crossing Times

The economic vitality of the “Golden Horseshoe”, a densely populated and industrialized region which encompasses Southern Ontario, Canada and parts of New York State including the Buffalo-Niagara Region, is heavily dependent upon the ability to move goods freely and efficiently across the Canadian-US border. This highlights the critical importance of the Niagara Frontier International border crossing, one of North America’s busiest portals for travel and trade. This study had two primary objectives.

Experimental Study on Pre-tressed Concrete Box Beams from a Decommissioned Bridge Strengthened with Carbon Fiber Reinforced Polymer Anchors and Laminates

This study addresses the need to increase the flexural capacity of deteriorated pre-stressed concrete
box beams through an experimental campaign involving the design, application, and testing of a
retrofit scheme. The retrofit scheme considered here involves the use of carbon fiber reinforced
polymer (CFRP) laminates which are attached to the beams using epoxy and CFRP anchors.
Three 57-ft long beams were obtained during the demolition of a bridge in Buffalo, NY. The bottom
surface of the beams was prepared for the application of the CFRP retrofit. Besides cleaning, the

The NYC Taxi & For-Hire Vehicle Insurance Crisis: Root Causes & Solutions

The NYC taxi and for-hire vehicle (“FHV”) insurance crisis has reached a pivotal point, driven by high insurance premiums that threaten to price-out individual drivers and fleet owners and rooted in the $700 million insolvency of the New York City taxi and FHV market’s biggest insurer, American Transit Insurance Company (“ATIC”). This report seeks to identify the root causes of the crisis and propose actionable reforms to address the industry’s challenges.

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