Let's say that I have already placed 14 roads and have the Road Building Progress Card. Am I able to play it and place my single road, or must I be able to play 2?
Here's the full description in the Almanac:
Road Building: If you play this card, you may immediately place 2 free roads on the board (according to normal building rules).
It seems like if I may place 2 free roads I may place only 1 road, but someone suggested that I must place 2.