By Robin Shulman

Washington Post Staff Writer

Sunday, May 25, 2008;

Page A02

NEW YORK -- The view from the lens of photographer Mark Weiss's camera is of a treacherous world of cab drivers weaving into bike lanes, of double-parked delivery vehicles, of car doors opening suddenly, of pedestrians wandering blindly and of narrow passageways between trucks. It is the world of the Manhattan bicycle commuter, which Weiss captures on a camera affixed to a bar on his single-gear bike.

City officials, hoping to make commutes like his less treacherous, have created a seven-block experiment of a bike lane on Ninth Avenue. Here, concrete dividers and a row of parked cars shield a bike lane from the street and its traffic. Low mini-traffic lights show when cyclists have the right of way. Bike commuters, messengers and delivery people peel down perfectly smooth paths.

"It would be nice if that were everywhere," said Weiss, 45.

The city is planning to create another protected lane on Eighth Avenue, part of an effort to encourage cycling in New York, where bike use has increased by 75 percent since 2000, to about 130,000 commuters a day. The city hopes to double current bicycle use by 2015 and to triple it by 2020.

"We've run out of room for driving in the city. We have to make it easier for people to get around by bikes," said Janette Sadik-Khan, the city's transportation commissioner, who herself bikes to work. She is installing covered bike racks that resemble bus shelters, distributing thousands of free helmets, and expanding a small network of bike lanes to 400 miles by next summer (out of 6,000 miles of city streets).