Couple of places locally where narrow bridges are alternate one way working with traffic lights.
One is a permanent set up on a bridge over the Grand Union Canal with restricted sightlines. It defaults to red both ways. Works fine so long as folks do what the French 'avancez jusque aux feux' signs stipulate and creep right up to the stop line. At leat twice I've had to get out and invite somebody to actually creep right to line.
Other is temporary where a narrow bridge over West Coast rail line is further constrained by road crumbling at margins. Lights fail at their default of red both ways. You just have to creep/peep and hope anybody coming other way is doing same.
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