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On much of the project area, posts, paint and new curbs haven't been added yet to help keep drivers – such as the protesters – out of the future curbside bikeways.

By Austin Busch

By Jeremy Wolff

By Ellen Steinke

Here's the fourth installment of our series "Streetsblog Chicago versus smoking on the CTA." This is our campaign for "carrot" rather than "stick" strategies (not simply more policing) to reduce smoking and vaping in 'L' cars. Take a look at part one for an intro to my thoughts on this subject and the approach I'm taking. But to recap, it can be dangerous for people with disabilities, senior citizens, and young kids to inhale smoke in enclosed spaces, and it's unhealthy and aggravating for the rest of us. And ultimately, smoking on trains can make trips feel unsafe and unpleasant, causing people to avoid transit.

This is the third episode of our series "Streetsblog Chicago versus smoking on the CTA." It's an attempt to to find holistic solutions (not just additional enforcement) to the frustrating issue of smoking and vaping within 'L' carriages. Check out part one to get a sense of where I'm coming from on this topic. Many of us know that smoking in enclosed spaces is a big problem for those with lung conditions, elderly folks, and young children. And second-hand smoke is harmful and irritating to others as well, and it discourages people from riding public transportation.

By Kalen Luciano

This post includes reporting by a contributing writer.