Riding in the gutter is not an option for me. No way, no how. Way too many hazards to deal with that close to the curb. 3 feet is the minimum I'll get to the curb, plus min. 2 to 2.5 feet to the left of my tires (2-foot total width of me on bike, plus "wobble" operating space = 4-5 feet total operating width), plus 3 foot minimum required clearance by law, plus about 7 feet total width for most cars mirror-to-mirror. That's about 14.5 to 15 feet.

Also that stripe design pictured is downright stupid. The car cannot operate without either encroaching into the bike lane or hanging out over the center line.