One of the responses was where someone was monitoring the lateral acceleration and it's comparison to what is 'comfort' or 'discomfort'.
The question is related to a FHWA research project we worked on in the 80's which included our coming up with a 'discomfort factor'.
The figures below are our response.
- We'd also reiterate our comments in the forum post:
HVOSM Studies of Cross-Slope Breaks on Highway Curves", Contract DOT-FH-11-9575, PB33 191619
The main point is that the 'comfort' or 'discomfort' felt by a driver is due not only to lateral acceleration but also the vehicle roll angle.