Urgency of the design, importance of the highway, value of the project, and availability of non-destructive tools usually influence what testing is performed. However, proper evaluation is essential to ensure performance; there is no substitute for comprehensive planning that includes reserving the equipment when needed.

The most common structural-based non-destructive tools used in TxDOT are discussed in some detail in the Flexible Pavement Rehabilitation Strategies Training Course located in the Maintenance Division website under the

Pavement Engineering

link. Practical exercises in the use of analyses software for data collected by these systems are also included in this course.