RTDR switch?

[Uber_D]

I have a new to me 2001 Allegro Bus 37tp. On the driver arm rest control panel I have my HWH controls and two switches. One mounted on each side of the master jacks down light. One is labeled ICC ( I know what that is), and one is labeled RTDR. Can anyone tell me what that does?

[Dadeaux]

I would check the driver's seat for rocket boosters before activating it.

I ran that acronym through a couple of data bases and neither had a suggestion. Try posting your question on the Tiffin net surely someone there knows.

[gear-head]

it probably stands for retarder aka exhaust or engine brake or possible your transmission has a retarder

[Uber_D]

As a confirmation it did indeed stand for retarder

[Route 66]

It would have to be an exhaust brake if equipped as I'm quite sure that MH does not have an engine brake nor a transmission retarder.

[mahon1993]

Ejection seat for DW.

[Wizard]

If it was on mine, DW would tell everyone that its the name of the driver

[HD4Mark]

Just for laughs I Googled it and down at the bottom of the page is a link to this post. Talk about going around in a circle.
BTW I didn't know what it meant either.

[Uber_D]

I was on the phone with Freightliner regarding a steering gear issue and asked the RTDR question. He said it was theirs, it came with the chassis (not add-on by Tiffin). He said it was a retarder and worked on downshifting the the transmission to aid in slowing the vehicle down inclines when enabled.

[frankdamp]

I drove transit for a few years after retiring from Boeing. Our coaches had a retarder that was a hydraulic motor-type device on the Allison transmission that helped to slow down the coach when you backed off the accelerator, but didn't use the brakes.

On our coaches, it was defaulted to "on" and if you chose to turn it off you had to tell despatch that you had done so. I can't honestly say that I could tell the difference!