Tag 'turn:lanes:backward = through|through;slight_right'

• 1: sidewalk:left
• 1: surface
• 1: lit
• 1: lanes:forward
• 1: maxspeed
• 1: name
• 1: lanes:backward
• 1: turn:lanes:backward
• 1: highway
• 1: postal_code
• 1: cycleway:left
• 1: foot