GrapeGel t1_j9ftym5 wrote on February 21, 2023 at 4:51 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 Indians still use them in rural areas, it's commonly known as kaccha rasta aka raw roads. They are quite reliable.. Water bound macadam roads Permalink 5
GrapeGel t1_j9ftym5 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
Indians still use them in rural areas, it's commonly known as kaccha rasta aka raw roads. They are quite reliable.. Water bound macadam roads