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nostr:npub1t7srnslk5ue5nyj9uqxvyuuvrmyvqpgcffanlyh3ndrevp8kh5eshse9ft That is under for run away vehicles, whose brakes have failed.

nostr:npub1t7srnslk5ue5nyj9uqxvyuuvrmyvqpgcffanlyh3ndrevp8kh5eshse9ft descending down the mountain, Semi truck brake malfunction can cause a runaway truck situation. These series of berms stop the decent.

nostr:npub1t7srnslk5ue5nyj9uqxvyuuvrmyvqpgcffanlyh3ndrevp8kh5eshse9ft it’s actually to make trucks go faster into oncoming traffic. They start at the top of the ramp to build speed.

nostr:npub1t7srnslk5ue5nyj9uqxvyuuvrmyvqpgcffanlyh3ndrevp8kh5eshse9ft Semi trucks use this to stop when their brakes are not working properly