なぜ山道はわざわざS字に曲がるのか？

Roads that appear to be built in a straight line often curve in an S-shape. In fact, there are various reasons behind this, including topography, safety, land use, and ease of construction. This video will explain the mechanisms and background behind S-shaped road curves in a clear and easy-to-understand way. You'll probably see the roads you normally drive on in a slightly different light. □Chapters 00:00 ◆Opening◆ 00:00 Why is this road S-shaped? 00:47 There's more than one reason 01:41 Going straight down is too steep 02:58 Adapting to the terrain is safer 03:52 Distributing sudden changes in direction 04:49 Smoothing changes in speed 05:39 S-curve at bridge attachment point 07:10 Avoiding dangerous slopes 08:26 S-curves can occur even on flat ground 10:38 Constraints imposed during construction 12:02 Alignment determined by land and budget 13:22 Observing traces in aerial photographs 14:47 Formulating hypotheses from maps 16:25 S-curves represent a compression of circumstances 17:54 Next, curves before and after the bridge? □Compilation □Please subscribe to the channel!    / @yukkuri_dark_shinbun   ▼Recommended Videos▼ #Slow-paced explanation #Civil engineering #Slow-paced civil engineering infrastructure explanation #Bubble era legacy #For work