DOCUMENT

SPEC - Retroreflectivity of Pavement Markings 2003

  • YEAR CREATED: 2003
  • ENTITY TYPE: Authority: Transportation
  • TYPE OF DOCUMENT: SPEC - Specification
The document, titled TxDOT NO. 968, outlines the specifications for mobile retroreflectivity data collection (MRDC) used by the Texas Department of Transportation (TxDOT). The purpose of this specification is to provide guidelines for evaluating the retroreflectivity of pavement markings. The scope of the specification focuses on the measurement and reporting of continuous retroreflectivity readings of pavement markings within a specific TxDOT district. The work plan involves the use of a mobile retroreflectometer to collect data on state-maintained roads. The collected data includes various details such as the rater's name, date, location, section length, comment code, pavement marking type, and pattern. To ensure efficient data management, the collected data is required to be compiled in a Microsoft Excel format and submitted to TxDOT on a diskette or CD-R. TxDOT will review and approve the data after scanning it for viruses. The vendor responsible for the data collection is required to provide personnel, equipment, and a qualified project manager. The MRDC teams should consist of a minimum of two employees, with the team leader having completed the MRDC equipment manufacturer's certification class. Furthermore, the vendor is expected to establish and maintain communication with TxDOT throughout the data collection process. This specification, TxDOT NO. 968, provides a comprehensive framework for conducting mobile retroreflectivity data collection to ensure accurate evaluation of pavement markings' retroreflectivity for the Texas Department of Transportation.
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