1. What does RIRO stand for? Name two examples in Ontario.
Right-in, right-out. Hwy 11 between Barrie and North Bay, and Hwy 35/115 between 401 and the 35/115 split are two examples.
2. List two SPUIs in Ontario
No idea.
3. What does the term "parclo" refer to?
Partial cloverleaf, I think...