Understanding Your Local Problem

The summary of what is known about pedestrian-vehicle crashes and resulting injuries and fatalities provides a very general overview. To understand your local pedestrian-vehicle crash problem, you must combine this general knowledge with specific facts describing your local conditions. Carefully analyzing your local problem will help you design an effective response strategy that fits your specific needs.

Stakeholders

In addition to criminal justice agencies, the following groups have an interest in the pedestrian injury and fatality problem, and you should consult them when gathering information about the problem and responding to it:

Asking the Right Questions

Ask the following questions to gain a better understanding of your community’s pedestrian injury and fatality problem. The answers to these questions will help you develop an effective response that reduces the frequency of pedestrian injuries and fatalities.

Incidents

Locations/Times

Victims

Physical Characteristics

Current and Previous Responses

Measuring Your Effectiveness

Measurement allows you to determine to what degree your efforts have succeeded, and suggests how you might modify your responses if they are not producing the intended results. You should take measures of your problem before you implement responses, to determine how serious the problem is, and after you implement them, to determine whether they have been effective. You should take all measures in both the target area and the surrounding area. For more detailed guidance on measuring effectiveness, see the Problem-Solving Tools guide, Assessing Responses to Problems: An Introductory Guide for Police Problem-Solvers.

The following are potentially useful measures of the effectiveness of responses to pedestrian injuries and fatalities. These measures are divided into two groups: those that measure the impact on the problem (so-called outcome measures), and those that measure how well your agency the responses (so-called process measures).

Impact on the Problem

Impact on Pedestrian and Driver Behavior

Data, Information, and Analysis

Initially, your agency’s ability to reduce incidents of pedestrian injuries and fatalities depends on the data available for analysis. For instance, data are necessary to identify high-frequency pedestrian-vehicle crash locations where you should implement responses or to show if alcohol was involved.

In addition, your agency must also determine which type of pedestrian behavior is problematic and which factors contribute to pedestrian injuries and fatalities. Several methods of data collection could help your agency analyze these variables.

First, your agency could systematically observe pedestrian walking behavior at identified problem areas. You could identify problem areas through pedestrian injury and fatality statistics. Systematic observation allows you to analyze variables such as street/sidewalk design, pedestrian signs/crossing devices, pedestrian paths, etc. To best understand the problem, the observers should not be uniformed police officers, or if they are, they should be hidden from the view of the people being watched. Otherwise, pedestrians might change their behavior and you will not know how they behave when the police are not present. You can use videotapes of these observations for detailed analysis and group discussion later. You can also use videotapes to help illustrate the problem to other stakeholders, educate the public, and potentially evaluate the response (by comparing before-and-after response video imagery of the same location at the same times).

Second, your agency should consider conducting surveys of pedestrians in the problem areas. You should design surveys to reveal why pedestrians choose certain behaviors at particular locations rather than other behaviors. You can also use them to learn about pedestrian perceptions of signs, signals, and other physical conditions. For an example of a police-pedestrian survey from the Madison (Wis.) Police Department, see http://www.ci.madison.wi.us/police/pedestrian.html.

Third, your agency could interview drivers and pedestrians involved in crashes. These data could provide detailed accounts of the situation leading up to the crash. In addition, police investigative reports can provide important information. Data from other first responders (i.e., fire and EMS) might also be useful, as well as information from emergency room physicians. Because of medical privacy legislation, medical staff cannot share much of this data. However, discussions with medical professionals can identify ways to ensure patient privacy and legal compliance, and still yield valuable information.

Fourth, your agency should compare streets with high rates of pedestrian injuries and fatalities to similar streets (in terms of traffic volume, pedestrian volume, location types, etc.) without many pedestrian injuries and fatalities. This will help reveal factors that are major contributors to the problem (factors found at problem locations but not at similar nonproblem locations).