Here's an experiment you can try. But please be the scientist and not the test subject.

Watch people cross the street and note whether they're yakking on the phone, texting or bopping to tunes while they do it. If you're really ambitious, time how long it takes them to cross.

This past summer researchers from the University of Washington did it. They watched more than 1,100 pedestrians at the 20 intersections in Seattle that racked up the most pedestrian injuries over the last three years.

Every dot on this map represents a location where at least three collisions have occurred between pedestrians and vehicles since 2008. For the purpose of this map, cyclists are counted as pedestrians. The data was compiled by the Austin Police Department and placed on a map by KUT News.

Austin police have issued more than 200 jaywalking citations as part of a two-week crackdown that runs through Saturday. APD’s Highway Enforcement Command says it launched the campaign because of a high number of pedestrian deaths: 17 so far this year, compared to 7 in 2010.