"The Wiggle" is one of San Francisco’s most beloved and cherished
bike routes and guides riders the easiest way between two nasty hills.
It even has its own
Wiki page.

It’s so popular, it is hard to stand there at any point of the day
and not see mega helpings of cyclists passing thru! (Please note: This
is a camera person’s dream.)  Recently, after
a judge partially lifted a full ban (due to an injunction) on bike
amenities, the SF DOT striped a unique combo to aid cyclist’s safety and
sanity.  A
green bike box on Scott Street – believed to be California’s first –
allows riders to safely wait and queue up for a dedicated left-hand
turn lane which runs the length of the entire next block.

Andy
Thornley from San Francisco Bike
Coalition took us around to show how it works – and some riders
voiced their appreciation.