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原文传递 DURABLE, COST-EFFECTIVE PAVEMENT MARKINGS. PHASE I: SYNTHESIS OF CURRENT RESEARCH.

题名：	DURABLE, COST-EFFECTIVE PAVEMENT MARKINGS. PHASE I: SYNTHESIS OF CURRENT RESEARCH.
作者：	Thomas-GB; Schloz-C
关键词：	Color-; Iowa-; National-Transportation-Product-Evaluation-Program; Retroreflectivity-; Road-marking-materials; Road-marking-tapes; Road-markings; State-of-the-practice; Technology-; Thermoplastic-materials; Traffic-paint; United-States
摘要：	Pavement marking technology is a continually evolving subject. The goal of Phase I of this research was to identify the current practice and experiences in pavement marking from around the United States in order to recommend a further course of action for the state of Iowa. There has been a significant amount of research completed in the last several years. Research from Michigan, Pennsylvania, South Dakota, Ohio, and Alaska all had some common findings: white markings are more retroreflective than yellow markings; paint is by-and-large the least expensive material; paint tends to degrade faster than other materials; thermoplastic and tapes had higher retroreflective characteristics. Perhaps the most significant program going on in the area of pavement markings is the National Transportation Product Evaluation Program (NTPEP). This is an ongoing research program jointly conducted by the American Association of State Highway and Transportation Officials and its member states. Field and lab tests on numerous types of pavement marking materials are being conducted at sites representing four climatological areas. These results are published periodically for use by any jurisdiction interested in pavement marking materials performance. At this time, it is recommended that the state of Iowa not embark on a test deck evaluation program. Instead, close attention should be paid to the ongoing evaluations of the NTPEP program. Materials that fare well on the NTPEP test decks should be considered for further field studies in Iowa.
总页数：	2001/06. pp33 (1 Fig., 4 Tab., 31 Ref.)
报告类型：	科技报告