sparky1499 t1_j9exdsi wrote on February 21, 2023 at 12:50 PM Reply to TIL of Macadam roads. These roads were convex, raised a few inches, and made of layered crushed rock; they were state-of-the-art for the 19th century. The rise of automobiles led to the dust issues that were solved by binding the roads with tar, leading to the invention of tarmac. by jamescookenotthatone Proud Scotsman chiming in here! https://en.wikipedia.org/wiki/List_of_Scottish_inventions_and_discoveries?wprov=sfti1 Permalink 14
sparky1499 t1_j9exdsi wrote
Reply to TIL of Macadam roads. These roads were convex, raised a few inches, and made of layered crushed rock; they were state-of-the-art for the 19th century. The rise of automobiles led to the dust issues that were solved by binding the roads with tar, leading to the invention of tarmac. by jamescookenotthatone
Proud Scotsman chiming in here!
https://en.wikipedia.org/wiki/List_of_Scottish_inventions_and_discoveries?wprov=sfti1