Level 1B The Level 1B Roadway Specialist certification class is one day that prepares the individual to properly monitor and conduct Quality Control / Quality Assurance testing for the placement of asphaltic mixes on the roadway in accordance with TxDOT Test Procedures. There is no demonstration or training; individuals must come prepared to pass examinations of associated test procedures through demonstration, verbal and practical methods. Once the evaluations are successfully completed, a final written examination is administered. A score of 80% or higher is necessary to obtain certification. Test Procedures covered: Tex-207-F Determining Density of Compacted Bituminous Mixtures (Parts 1, 4, 5, 6, 7 and 8) Tex-222-F Sampling Bituminous Mixtures Tex-225-F Random Selection of Bituminous Mixture Samples (Part 2) Tex-244-F Thermal Profile of Hot Mix Asphalt Tex-246-F Permeability of Water Flow of Hot Mix Asphalt Tex-500-C Sampling Bituminous Materials, Pre-Molded Joint Fillers and Joint Sealers (Parts 2 and 3) Re-certification Every three (3) years all Level 1B Roadway Specialists are required to re-certify. Re-certification consists of attending the one day certification class. A Specialist can re-certify up to one year prior to the expiration date. If certification expires the specialist may not perform any Level 1B responsibilities on a TxDOT project and will be required to attend a Level 1B Certification class to re-certify.