List of Contributions

I agree with Mr. Singleton and would go further. AASHTO publications are a guide and not the standard unless adopted. FHWA has adopted them for National Highways or federally funded work but defers to state or local standards that are properly adopted and are of equal or greater than the AASHTO standard. ...

In California, there have been legislative attempts to mandate the use of piezoelectric transducers in state highways. They have usually failed due to what the other commentators pointed out - lack of details as to benefits versus the costs in maintaining and future repair/replacement. There is interest ...