Title page
Contents
Background 5
Summary 7
Crash Site 7
Pre-Crash 7
Crash 9
Post-Crash 10
2016 Freightliner Cascadia 11
Description 11
2017 Hyundai Translead Semi-Trailer 12
Description 12
Damage 13
Semi-Trailer Conspicuity 14
2016 Freightliner Cascadia Occupant 16
Driver Demographics 16
Driver Injuries 16
Driver Kinematics 16
2016 Chevrolet Malibu 17
Description 17
Exterior Damage 18
Event Data Recorder 19
2016 Chevrolet Malibu Occupant 21
Driver Demographics 21
Driver Injuries 21
Driver Kinematics 21
Crash Diagram 23
Appendix A: Event Data Recorder Report for 2016 Chevrolet Malibu 24
Figure 1. View of the Chevrolet underriden beneath the semi-trailer (on-scene law enforcement image) 5
Figure 2. Southwest-facing view of the westbound lanes in the vicinity of the crash 7
Figure 3. Westward view of the left-side tire marks from the Hyundai trailer 8
Figure 4. On-scene westward law enforcement image of the involved vehicles at final rest, the impact tire marks from the Hyundai semi-trailer on the roadway 9
Figure 5. On-scene southeast-facing image provided by the Freightliner's driver, showing the Chevrolet wedged beneath the Hyundai semi-trailer at final rest 10
Figure 6. Right-plane view of the involved Freightliner (image provided by the trucking company) 11
Figure 7. Right-front oblique view of the Hyundai Translead semi-trailer at the time of the SCI inspection 12
Figure 8. Right-plane view of the Hyundai trailer and the corresponding damage from the impact and underride engagement by the Chevrolet 13
Figure 9. Forward-facing view of the Hyundai's undercarriage and the deformed I-beam (third from top) 14
Figure 10. View of the fractures to the two rearmost side skirt mounting brackets on the Hyundai's right side 14
Figure 11. Left-front oblique view of the Chevrolet at the time of the SCI vehicle inspection 17
Figure 12. Front view of the Chevrolet's greenhouse damage from the semi-trailer underride 18
Figure 13. Left-plane view of the Chevrolet and the observed roof crush 18
Figure 14. Overhead view of the crush to the Chevrolet's greenhouse from the underride impact and engagement 19