IcebergSlimD
Newbie
Some of McCurry's signs need updating. That is one of them.
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So long story short, there is no set rule. It just depends on how you want to play it and/or how a TD decides what the rule should be.
Personally I would consider the road in play.
My local course has a hole where there is a gravel road that acts as the fairway. The tee box is set up just next to the road on the right side, and the hole is just shy of 300' up the road on the left side. Interestingly enough, though the sign does show the dirt walking trail that crosses about two thirds of the way up the fairway (road), it does not actually show the gravel road running straight up the fairway.