These guide specifications provide guidance for developing transportation contract specifications and are the national standard for best practices in highway and road construction. This consensus-based guide ..... Read More
This 2020 3rd edition includes the following revisions and updates from the previous 2015 2nd edition: new fracture mechanics-based model for reflective cracking in AC overlays over flexible, ..... Read More
The AASHTO Materials Standards contain specifications, test methods, and provisional standards commonly used in the construction of highway facilities.
The Materials Standards are updated three times ..... Read More
TRAC™ (Transportation and Civil Engineering) & RIDES (Roadways In Developing Elementary Students), AASHTO’s educational outreach programs, are designed for use in Science, Technology, Engineering, and Math (STEM) classes.
The hands-on activities introduce students in grades K-12 to the work world of transportation and civil engineering and inspire them to consider careers in those fields. Both programs are aligned with national standards and are currently being aligned with the Core Curriculum Standards of Learning.
State departments of transportation work with schools in their state by providing the curricula and resources for the schools and providing engineers to visit the classrooms to serve as speakers, teach a hands-on activity, and/or talk to students about the importance of math and science in preparing for their future.
TRAC has eight modules that engage students in solving real-world problems while connecting them to the work world of transportation. Students design bridges, build magnetic-levitation trains, plan a city, program automated vehicles, or learn about environmental issues that impact transportation.
In addition to providing a tool for teachers to improve math and science instruction in middle and secondary schools, TRAC improves workforce diversity which helps to resolve one of the most pressing problems faced by transportation today: a critical shortage of civil engineers.