3 ms·
Looking at the chart on the bottom left on pg 12 https://www.bart.gov/sites/default/files/docs/BART%20Stability%20Study%20Compressed_0.pdf https://www.bart.gov/
by potiuper 4y ago
Looking at the chart on the bottom left on pg 12 https://www.bart.gov/sites/default/files/docs/BART%20Stability%20Study%20Compressed_0.pdf https://www.bart.gov/sites/default/files/docs/BART%20Stabili... 6 ft+ gauge rail looks to be required just to get the 0 margin of stability to withstand the 100 mph+ wind speeds San Francisco has seen https://www.nbcbayarea.com/news/local/23-years-ago-strong-storm-bay-area/200744/ https://www.nbcbayarea.com/news/local/23-years-ago-strong-st... Although, it would make more sense to stop running the trains in 67 mph+ winds due to the average individual being pushed adversely by the wind such as at a station.
- hadlock 4y agoDallas runs trains slower, and at certain temps, stops them completely above ~104 sustained for ~>4 hours because the rail can/will buckle due to expansion. I think they also do a stop travel when the temp gets below a certain temp as well. It's not unheard of, and not a bad idea when it comes to public safety and potentially derailing a commuter train in downtown or whatever your worst case scenario is.
- andbberger 4y agothis happened in the bay like 3 weeks ago. caltrain just kind of turned the trains off as they like to do, BART derailed due to buckling