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Note that these are minimums and, for protection, certain segments may be at higher lock levels.
This is interim guidance for
California, until such time as National standards are agreed upon. U-turns on *two-way* Primary Street through Major Highway type roads may be enabled in the following two circumstances: *1) The U-turn is _explicitly_ allowed by signage *2) The U-turn is otherwise legal and safe, and there is _at least_ 10.1 m (33 feet) from the left edge of the departure lane to the "destination" curb. This can include any median that may exist to the left of the departure lane.
Do NOT make a point of enabling all U-turns valid under this guidance, only as you encounter them and they are necessary. Do not enable U-turns on Street type roads. This guidance could change in the future.