test film frame-by-frame to Cartesian coordinates, which were input into a spreadsheet for analysis. Using the coordinate data and the known time between frames (operating speed of the cameras), a displacement-time history was produced. Differentiation of the displacement-time history produced the initial vehicle speed. Data measurements included initial vehicle impact speed, roll angle, yaw angle, and pitch angle.
The Chevrolet C2500 pickup truck was placed on the FOIL side-impact monorail with its longitudinal centerline perpendicular to the runway centerline, ensuring alignment of the target impact point with the lighting standard. The morning of the test, the dummy was positioned in the driver seat using the H-point data and FMVSS 214. The dummy was restrained using the vehicle shoulder-lap belt restraining system. Using three digital voltmeters, the outputs from the three pole strain gage bolts were monitored. The bolts were tightened until the proper voltage corresponding to 44,500 N was attained. Just prior to testing, the following was noted: the emergency brake was released (not engaged), the head rests were positioned in the highest adjustment, the windows were down, the transmission was placed in neutral, the battery was disconnected, and the key was placed in the "on" position. The Chevrolet C2500 passed over the monorail speed trap, which measured a speed of 38.5 km/h. Because of the frictional forces between the truck tires and the wet pavement, the vehicle speed was reduced to 34.6 km/h at impact and the truck leaned or rolled toward the pole at 3.8°. The initial yaw angle was not available due to an overhead camera malfunction. Table 8 summarizes the test conditions and selected results.
Table 8. Summary of test conditions and results . |
|
| FOIL test number | 98S003 |
| Date of test | February 11, 1998 |
| Test vehicle | 1994 Chevrolet C2500 two-door pickup truck |
| Weight: C2500 Truck SIDH3 Total |
1995 kg 80 kg 2075 kg |
| Test article | Valmont Industries slip away lighting standard |
| Temperature inside vehicle | 15.6°C |
| Clamping load strain gage bolt #1 | 42,760 N |
| Clamping load strain gage bolt #2 | 42,500 N |
