From Atlantic Cities:

Doug Gordon decided to try a little bike lane experiment.  (He) placed red plastic Solo cups (yes, the ones you use when drinking from a keg) along the edge of a painted bike lane that is often blocked by parked livery cars and other drivers.

The conditions were hardly scientific, but these small plastic delineators, stuck to the roadway with duct tape, seemed to be pretty effective in preventing vehicles from entering the bike lane.

…  my little experiment did provide at least a modicum of evidence that very basic forms of separation can make big differences when it comes to defining road space for different users.

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From The Urban Country:

To see how a bike lane might work on this street we gathered garbage and sticks and created a homemade bike lane. The painted bicycle symbols (or “sharrows”) were painted by an anonymous group/person shortly after Jenna’s death.

We observed how cars and trucks drove with our “trash” bike lane present. Drivers seemed to stay clear of our faux bike lane when they drove through the intersection, including a large tractor-trailer whose rear wheels stayed clear of our bike lane.

Read about our trash bike lane on Mez’s blog: “Re:Cycling – This is how bike lanes save lives