What year were tags added?

[Neweller]

I would like to know what year Newell offered the tag axle? What length and engines had the tag axle?

Thank you.

[TechTalk]

The first tag axle (three axle) Newell was built in 1978. The next was not built until 1986, with Detroit Diesel 8V92 power. The coach was a 40 footer. Since then, coaches from 39 ft. have been built with tag axles, although in the late 1980s, coaches up to 40 ft. could also be ordered with two axles.