Obviously, this adds significant costs to the project. The most desirable location for medians is between high-use pedestrian generators. Unfortunately, these locations are also where automobile access is highest. Installing medians for pedestrians in such locations will conflict with the desire to provide access in and out of the generator locations for left-turning vehicles. While improving safety for pedestrians, the installation of medians could prove to be politically unpopular for this reason.
Traffic counts on arterial and nearby residential streets.
Community resident surveys. Possible measures of success include crash reductions, lower average travel speeds, and in the long run, higher levels of non-motorized transportation. One potential side effect to consider is whether motorists use nearby residential streets to avoid rechannelization. This phenomenon can undermine support if treated arterials mean more hectic traffic on neighborhood streets. Since it is important to evaluate traffic not only on the arterial itself, but on nearby residential streets, all surveys should reach out to those living near the project.