The basic concept of the certification program is to provide a quantitative basis for evaluating the ability of a contractor to accurately measure the retroreflectivity of long-line pavement markings. A contractor that wishes to be certified would send the personnel and equipment to the TTI certification course. The course consists of numerous pavement markings of various colors, patterns, and retroreflectivity levels. The contractor would measure a selection of lines as directed by TTI officials and provide the measurement results to the TTI officials. TTI will evaluate the measurement values and determine whether the contractor should be certified.
If a contractor meets the certification requirements, the contractor will be eligible to work on TxDOT contracts that utilize mobile retroreflectivity measurements. If the contractor does not meet the certification requirements, the contractor can attempt to become certified at a later date. Specific details on the certification registration and testing, certification results, and field verification testing are provided in the TTI Mobile Retroreflectometer Certification Program document.
Any contractor that wishes to participate in the certification program must register in advance. To complete the registration process, the contractor submits the necessary forms and develops a testing schedule through the Program Coordinator. The Registration Form should be completed and emailed to the Program Coordinator at least one week prior to the certification trial.