these instructions seem to indicate that both 0 and 180 are described as "S". notice item 0 and 2.
["route_instructions", [["Start", "abc", 0, 0, 210, "0", "S", 0], ["U-Turn", "abc", 222, 1, 420, "1", "S", 180], ["Turn left", "cde", 222, 2, 420, "2", "W", 270.02], ["U-Turn", "cde", 0, 3, 210, "3", "S", 0]]]
these instructions seem to indicate that both 0 and 180 are described as "S". notice item 0 and 2.
["route_instructions", [["Start", "abc", 0, 0, 210, "0", "S", 0], ["U-Turn", "abc", 222, 1, 420, "1", "S", 180], ["Turn left", "cde", 222, 2, 420, "2", "W", 270.02], ["U-Turn", "cde", 0, 3, 210, "3", "S", 0]]]