What happens if cars are already on the Liberty Bridge at 2 or 6pm when the lanes change? Or is there a system to make sure that never happens? Submitted by rabid_braindeer t3_yewdso on October 27, 2022 at 4:28 PM in pittsburgh 65 comments 73
Bandit_the_Kitty t1_iu140no wrote on October 27, 2022 at 7:46 PM https://en.wikipedia.org/wiki/Barrier_transfer_machine?wprov=sfla1 This is how they do it on the golden gate bridge. Basically close the lane in one direction and open in the other at the same time. Permalink 2
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