When going downhill on mountain roads with no dedicated cycle path, it happens quite often that the cyclist becomes the head of a train of vehicles, as the winding road does not allow an easy and safe take over.
In such situation, I personally feel much safer if I can stop and let the train pass by (even though the drivers are not putting pressure, the idea of losing control of the bike while moving at 50-60 km/h with a lot of vehicles behind me is kind of scary).
I therefore search for a suitable place to stop like a parking area on the shoulder and when I find it I come to a stop there.
What I normally do to convey the cars behind me that I am scanning the road for a place to stop is to sit with my torso straight on the saddle, and then raise my hand before signaling I am moving to the side.
I am not sure this is easily understood by drivers, so my question is: is there a codified gesture for conveying the message: "I am looking for a place to stop?"
This question came to my mind after taking a two-way mountain road, with speed limit at 50 km/h and where my travelling speed was ranging between 30 and 50ish km/h.