Salad Days

David Slauenwhite is working on further establishing himself as the King of Mathematically Significant Road Signs in Pennsylvania (see William English, Give Me Liberty and Pennsylvania). In David's words:


 * PA 284 is a quiet little road with an average daily traffic count of only 386 vehicles. It's only 9 miles long, from US 15 in Buttonwood west to PA 287 near English Center. Only the US 15 interchange has lines painted; the rest is a narrow two-lane road following Blockhouse Creek and Pine Creek through the mountains.

Salladasburg is pronounced sal-a-days-burg. As if the math isn't reason enough for this sign to be special, it also contains an error! There is a missing 's' in Wellsboro. (Like signs with errors?)



The math on this sign takes a trip to nature by bringing a state park into the equation.

$$13 + 9 = 22 $$

This sign is found in Pennsylvania on PA 284 westbound as it joins PA 287.

''Ed.: This is the fourth sign from David Slauenwhite, cementing his position with the most road signs found by anyone with the exception of the founder of Road Sign Math. Additionally, this is the fourth sign from Nebraska for second most mathematically significant road signs. New Mexico still holds the lead with five.''