When a serious crash occurs, you need to quickly get accurate measurements of the physical evidence to stay safe on the scene and support quick clearance of the roadway. Total stations are commonly used for this purpose, but setup and use requires time and expertise.
The Massachusetts State Police Collision Analysis and Reconstruction Section (C.A.R.S.), under the leadership of commander Lt. Andrew S. Klane, found that using GNSS RTK rovers could cut scene processing time by half compared to traditional documentation with total stations—and that was eight years ago. Recent technology advances such as adaptive on-the-fly satellite selection, accurate signal tracking across multiple satellite systems, automatic evaluation and verification of RTK measurements, real-time tilt compensation and visual positioning have propelled GNSS measurement to the forefront of scene documentation.
“Many investigators believe that if you can’t get to a point or don’t have a clear view of the sky you can’t measure it with GNSS, but that’s no longer true,” says Klane, who retired from MSP several years ago and now focuses on technology consultation and training through his firm Forensic Mapping Solutions Inc. (FMS). “With modern GNSS technology, you can be collecting data within 60 seconds of pulling up to the scene, and you can use it in just about every situation. There are very few tools that give you that much flexibility.” (RELATED: GNSS Innovation Provides New Quick Clearance Option for Collision Investigation.)
In a webinar that is now available on-demand, Klane outlines the basics of using GNSS as a quick clearance crash investigation and reconstruction tool and walks you through a test scenario that demonstrates significant time savings and data capture advantages. You’ll learn:
What to look for in a GNSS rover
How to use the latest GNSS capabilities to stay safe and expedite your time on scene
When NOT to use GNSS—and why that will happen less than you think
How to combine data from GNSS with drones, laser scanners and other sensors to elevate your scene diagrams
To learn more about GNSS technology or explore other time-saving scene investigation solutions, please contact us.