Guidelines for the Preservation of High-Traffic-Volume Roadways

Abstract

America's highway system is critical to meeting the mobility and economic needs of local communities, regions, and the nation. Developments in research and technology-such as advanced materials, communications technology, new data collection technologies, and human factors science-offer a new opportunity to improve the safety and reliability of this important national resource. Breakthrough resolution of significant transportation problems, however, requires concentrated resources over a short time frame. Reflecting this need, the second Strategic Highway Research Program (SHRP 2) has an intense, large-scale focus, integrates multiple fields of research and technology, and is fundamentally different from the broad, missionoriented, discipline-based research programs that have been the mainstay of the highway research industry for half a century. The need for SHRP 2 was identified in TRB Special Report 260: Strategic Highway Research: Saving Lives, Reducing Congestion, Improving Quality of Life, published in 2001 and based on a study sponsored by Congress through the Transportation Equity Act for the 21st Century (TEA-21). SHRP 2, modeled after the first Strategic Highway Research Program, is a focused, timeconstrained, management-driven program designed to complement existing highway research programs. SHRP 2 focuses on applied research in four focus areas: Safety, to prevent or reduce the severity of highway crashes by understanding driver behavior; Renewal, to address the aging infrastructure through rapid design and construction methods that cause minimal disruptions and produce lasting facilities; Reliability, to reduce congestion through incident reduction, management, response, and mitigation; and Capacity, to integrate mobility, economic, environmental, and community needs in the planning and designing of new transportation capacity.

Friction Surface Treatment Selection: Aggregate Properties, Surface Characteristics, Alternative Treatments, and Safety Effects

“…They further summarized the expected life ranges as shown in Table 4.1 for different preservation treatments based on the information reported by various sources. Peshkin et al (2011) also indicated that the life ranges represented a variety of conditions and reported using different performance measures. They further cautioned that these reported ranges may be based as much (or more) on perception instead of on well-designed, quantitative, experimental analyses.…”

“…Chip seal is the lowest-cost treatment option. Peshkin et al (2011) evaluated the effects of traffic level, pavement condition, and climate on the pavement preservation treatment performances. They further summarized the expected life ranges as shown in Table 4.1 for different preservation treatments based on the information reported by various sources.…”

Using UAV Based 3D Modelling to Provide Smart Monitoring of Road Pavement Conditions

“…Typically, the final selection of treatments and plans has to assess the needs and constraints of the particular project and city/region but these are all based on the input of current and historical pavement performance data along with data on the maintenance and rehabilitation activities that were carried out in the past [5]. This exemplifies the importance of data and data analyses to the entire process.…”

Macrotexture modeling and experimental validation for pavement surface treatments

“…Reference values for binder application rates in relation to chip seal types are summarized in Alderson [19]. (p) Finally note that in the Mechanistic Empirical Pavement Design Guide (MEPDG) chip seal solutions are recommended for improving pavement durability when raveling or shoving phenomena occur [76] and that Guidelines for the Preservation of High-Traffic-Volume Roadways (the second Strategic Highway Research Program, SHRP2, [77]) provide direction to agencies on the selection and use of preservation treatments for high-traffic-volume roadways. Slurry seal usage is limited (<33%) for both ADT > 5.000 vpd and ADT > 10.000 vpd; chip seals and micro-surfacing use for the same traffic values is moderate (33-66% usage).…”

“…(q) As for costs and durability of surface treatments, note that their cost ranges from 0.2 to 3.5 $/sq m, while the expected life of the treatment ranges from 1 to 10 years [23][24][25]75,77,81]. Lower values correspond to fog seals, while higher values correspond to chip seals.…”