To be on the road means to be traveling. You often hear this used in reference to musical groups or other entertainers. They are "on the road," meaning they are traveling from place to place to put on their shows. You would say "I'm on the road," if you were traveling to or from work and someone called on your cellphone, for example. You could also say "I'm going to be on the road next week." if you were planning a trip of some sort.
Fork in the road means a time when it is necessary to make a decision.
It means to start a journey or to leave.
vocabulary of the road
Stuck in a rut is a phrase, but I am not sure if an idiom is the same thing as a phrase. You may be thinking of a cliche and "stuck in a RUT" is a cliche. "Stuck in a road" is neither cliche nor idiom.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
It is not an idiom, it means your nose is itching.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book
"Sieve" is not an idiom. See the related link.
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
Simply its mean a bully.