"what do we do in case of loose dogs?", the consensus was we would speed up and ride like Hades, calling out to each other to make sure we didn't lose anyone.
I'm not convinced that acting as prey to a large preditor (which, after all, is what all dogs are) is a good idea.

What worked for me on my trip was to slow down, make myself big and bark NO! I used a deep chest voice and projected a lot of confidence. Of course, I'm a big woman and had dog spray in my hand when I did it.

The idea is to let them know that you are bigger, badder and meaner than they can ever hope to be. So far, with the dogs I've encountered, this method has worked better than running like a scared rabbit - which I had tried in the past. I'm not pretending I can bluff all dogs - that's why I carry dog spray. I don't intend to lose a confrontation with a dog.

One more thing. If you slow down, or even stop, the chances of a really bad wreck go down dramatically, and your chance of scoring a direct hit with the dog spray goes up.

One last, last thing. DH turned a bear once with this method when were hiking.

MomOnBike (AKA Alpha B-i-t-c-h and proud of it)