The driver Jonathon Freeman, said he did what he could to run interference and basically escort the cyclist, as other drivers passed by, some honking at the bicyclist.
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The last thing the video shows is the cyclist pulling onto the shoulder, just east of the Treasure Island Tunnel.
We've seen this kind of thing on the Bay Bridge before, and it's never safe.
Even though the bridge has a bike lane on the Eastern Span, you can't access it from the portion where automobiles travel.