Complex sentence: As of 2006, this technology is considered a standard in the evaluation of noise pollution from highways, but, remarkably, the nature and accuracy of the computer models used is nearly identical to the original 1970 versions of the technology.
Split into simpler sentences: As of 2006, this technology is considered a standard in the evaluation of noise pollution from highways. The nature and accuracy of the computer models used is nearly identical to the original 1970s versions of the technology.