By the definition carebare gave, I guess I've been doing RTCP all along and didn't know it. I always let my lye and oil cool to about 95 to 100 degrees. I don't take the temperature, just feel the side of the container and when I can't tell the difference between my body temp (temp of hands) and the containers, I make soap.
An aside, wouldn't true room temp be at whatever your room happened to be. I made soap the other day when it was 95 degrees. Hot to me, but the soap loved it. In the winter, if I let the oils and lye cool all the way, I'd be making soap at anywhere from 40 degrees (morning) to 60 degrees (afternoon). Perhaps room temperature is a misnomer.
I've found that 95 to 100 degrees works well for me. I get the best texture to the final soap.
In the Soapmaker's Companion, many of the recipes call for a temperature of 80 to 100 degrees.