Infrastructure

Airports are a critical component of the civil infrastructure system, serving as the main entry and exit points for both people and goods. Aircraft operations on airfields are monitored by personnel working at airport air traffic control (ATC) towers. These ground-based traffic controllers deliver advisory services and flight data documentation. Advances in surveillance systems by means of radio, image, and acoustic-based technologies have emerged to help airports monitor aircraft operations on airfields. These systems can provide personnel at control towers with additional information...

This report presents the initial performance of the Woodland SR 113 thin concrete overlay on asphalt (COA) project built in 2018-2019.The project comprises approximately four miles of a two-lane highway. The COA had 6 ft. transverse joint spacing, a slab thickness of 6in., and an asphalt base that was overall in very poor condition. The performance of the project between the date of construction andOctober 2020 is presented in this report. The performance was evaluated by different means, including periodic visual inspections andlongitudinal profiler evaluations; falling weight...

This paper evaluates the half-life performance of the first three 40 year design life jointed plain concrete pavements built in California, in the early 2000s. The projects, two on I-15 and one on I-40, have a combined total length of 420 lane kilometers (260 lane miles), are in desert areas, and have heavy truck traffic. The pavement performance evaluation used data from the California Department of Transportation (Caltrans) pavement-management system (PMS) databases, including pavement condition surveys, field data, and construction histories. An in situ evaluation of the projects done...

This report documents the findings of research sponsored by the Los Angeles World Airports to examine the influence of airport capacity constraints on airline fleet mix and to explore the potential effects of policy options to influence airlines to use larger aircraft types and thereby accommodate growth in passenger or cargo demand without a corresponding increase in the number of aircraft operations. This issue is of growing importance at many major airports in the United States and indeed around the world, as a steadily increasing demand for air transportation has resulted in volumes of...