Tools · Analysis & Visualizations

Motorcycle Crash Map Viewer

Explore motorcycle-involved crashes across California, filter by severity or alcohol involvement, and export lists for further review.

Reading time: 6 minutes

Overview

The Motorcycle Crash Map Viewer highlights motorcycle collisions within a selected community. Toggle severity and alcohol involvement, review summary counts, and drill into crash details from a single screen. Launch the tool from Motorcycle Crash Map Viewer in the Analysis & Visualizations menu.

  • Summarize motorcycle crashes by severity and alcohol involvement.
  • Inspect individual crashes on the interactive map or via Google Street View.
  • Export filtered results for reporting or enforcement planning.

Choose a location

Start by selecting a county and city or an unincorporated area. The map automatically loads your selection.

County and city selection controls in the Motorcycle Map Viewer
Select a county and city to load motorcycle crashes for that jurisdiction.

Tip

Need to analyze a corridor that crosses city boundaries? Choose the surrounding county and use the Zoom to area search box to enter a custom address.

Filter crashes

Once the location loads, adjust the available filters to refine the map and summary table.

  • Severity: Fatal, Severe Injury, Other Visible Injury, or Complaint of Pain.
  • Alcohol involvement: Include or exclude alcohol-related crashes.
  • Years: Focus on specific years of data.
Filter controls for severity, alcohol involvement, and years
Filters update the map, summary, and list automatically.
Motorcycle crash map with color-coded symbols
Crash symbols are color-coded by severity and icon style indicates alcohol involvement.

Understand map symbols

Colors indicate severity and icon shapes differentiate alcohol involvement. Use the legend and table below as a quick reference while exploring the map.

Symbol key for motorcycle crash map
Crash severity No alcohol involved Alcohol involved
Fatal Fatal crash symbol Fatal crash with alcohol symbol
Injury – Severe Severe injury symbol Severe injury with alcohol symbol
Injury – Other visible Other visible injury symbol Other visible injury with alcohol symbol
Injury – Complaint of pain Complaint of pain symbol Complaint of pain with alcohol symbol

Click a crash symbol to view a summary pop-up with location details and a link to an interactive Google Street View profile.

Crash detail pop-up with Street View link
Open Street View to investigate the crash environment.

Street View

Street View opens in a new tab. If the imagery is outdated, check the capture date in the upper-left corner to understand when the view was recorded.

Review results & exports

Summary statistics

Summary statistics table for motorcycle crashes
Counts update in real time as filters change.

View crash totals by severity and alcohol involvement. The counts refresh automatically when filters are adjusted.

Crash list

Crash list showing case IDs and offset details
Click a case ID to zoom to that crash on the map.

The crash list provides primary and secondary streets, offset distance, direction, and case ID. Use the list to review locations one by one.

Print and download

Use Print to capture the current map, summary table, and crash list—print to PDF for a shareable report. Select Download to export crashes to a CSV file; reference the SWITRS codebook for field definitions.