The City of Sacramento has recently installed lane channelizers at new locations in the central city. The three I’ve noticed are shown below. If you are aware of others, please let me know. The four locations that have been in place for several years are 15th Street (southbound) at O Street and at R Street, and 16th Street (northbound) at R Street and O Street. There are other locations where vertical delineators separate opposing lanes of traffic, which I call median hardening; for another post.