Diniece Mendes, EIT A.M ASCE

This paper presents a utility-based methodological framework for the valuation of transportation infrastructure. The proposed valuation methodology uses the asset replacement cost as the base value. Value is then added to the base value by considering three key factors associated with the infrastructure: physical condition, functionality, and overall asset use. Each factor is characterized by appropriate indicators that can be quantified with specific performance measures. Then, the utility… Show more

This paper presents a utility-based methodological framework for the valuation of transportation infrastructure. The proposed valuation methodology uses the asset replacement cost as the base value. Value is then added to the base value by considering three key factors associated with the infrastructure: physical condition, functionality, and overall asset use. Each factor is characterized by appropriate indicators that can be quantified with specific performance measures. Then, the utility theory is applied to combine the effect of performance indicators of varying measures and scales on the value of an asset. The proposed framework can assist state and local transportation agencies in optimizing their resource allocation procedures for better coordination of asset investments within or across infrastructure assets. Show less

A study on the crossing behavior of pedestrians at signalized intersections was undertaken at five locations in New York City. The areas of focus were: (1) pedestrian reaction times; and (2) the effect of pedestrian characteristics and walking environments on walking speed. Reaction times were studied for two pedestrian groups: (1) those that waited on the sidewalk; and (2) those that waited in the crosswalk.

In urban areas, bicycles that travel in bicycle lanes encounter a variety of obstructions, including pedestrians and various types of motor vehicles. Earlier studies focused on the frequency of such events. The goal of this study was to characterize the obstructions. Data were collected in the Manhattan and Brooklyn boroughs of New York City to evaluate specific characteristics (e.g., bicycle lane designs, curb regulations, land use) that might influence the frequency of specific conflict… Show more

In urban areas, bicycles that travel in bicycle lanes encounter a variety of obstructions, including pedestrians and various types of motor vehicles. Earlier studies focused on the frequency of such events. The goal of this study was to characterize the obstructions. Data were collected in the Manhattan and Brooklyn boroughs of New York City to evaluate specific characteristics (e.g., bicycle lane designs, curb regulations, land use) that might influence the frequency of specific conflict types. A method is described for evaluating the frequency of conflicts between bicycles that travel in on-street bicycle lanes and various other transportation modes and for identifying factors that might affect the frequency of such conflicts. Show less

New York City (NYC) must identify new strategies to address severe urban delivery challenges resulting from congested roads and inadequate loading space. One solution with the potential to achieve benefits for the city, for carriers, and for shippers while making use of the city's rapidly growing bicycle infrastructure is freight distribution from an urban micro-consolidation center (UMC) via human-powered or electrically-aided freight-tricycle. UMCs have been successfully implemented in Paris… Show more

New York City (NYC) must identify new strategies to address severe urban delivery challenges resulting from congested roads and inadequate loading space. One solution with the potential to achieve benefits for the city, for carriers, and for shippers while making use of the city's rapidly growing bicycle infrastructure is freight distribution from an urban micro-consolidation center (UMC) via human-powered or electrically-aided freight-tricycle. UMCs have been successfully implemented in Paris and London; this study details the results of a comparative analysis evaluating economic, infrastructure, and regulatory conditions in the three cities for the purpose of identifying opportunities and challenges for future implementation in Manhattan Show less