A total of 50 different bicyclist countermeasures are presented in the Countermeasures section of this application. To assist engineers and planners who may want further guidance on which measures are appropriate to address certain types of bicycle crashes, an interactive matrix is provided. The applicable treatments within the nine categories of countermeasures are shown for each of the 13 crash type groups.
To illustrate how to use the table, consider the sixth crash type group in the table (“Bicyclist Ride Out - Midblock”). This is a crash involving a bicyclist riding out into the roadway from a location in the middle of the block, such as a residential driveway. This tends to be a right-angle crash and often involves younger bicyclists.
The matrix shows that five out of the nine countermeasure categories contain potential countermeasures that may reduce the probability of this type of crash, depending on the site conditions. To view the specific applicable countermeasures in each category, click on the dot. A drop-down select box will appear listing the names of the applicable countermeasures. These countermeasures include shared roadway improvements, such as removal of parking to increase sight distance; traffic calming measures such as speed humps that could slow motor vehicle speeds and decrease the braking distance, and other possible countermeasures. Select a countermeasure from the drop-down box to view the page containing its detailed description.
The Selection Tool allows the list of countermeasures to be refined on the basis of site characteristics.
These charts are intended to give general information on candidate solutions that should be considered when trying to reduce a pattern of bicycle crashes at a specific location or roadway section. Many bicyclist crashes are the direct result of careless or illegal motorist behavior or unsafe bicyclist behavior. Many of these crashes cannot necessarily be prevented by roadway improvements alone. In such cases, bicyclist and motorist education and enforcement activities may be helpful.