the mast arm upon impact with the ground. A torn bolt-keeper plate was the only damage observed.

Table 11. Summary of lighting standard bolt data .
Bolt number	Bolt load at test (1000 N)	Peak load (1000 N)	Time of peak load (s)
Bolt #1	42.8	43.3	0.034
Bolt #2	42.5	42.5	0.000
Bolt #3	42.5	43.7	0.031

 

CONCLUSIONS AND OBSERVATIONS

 Visual inspection of the Chevrolet C2500 and pole after the collision produced immediate conclusions. Fuel system and door latch integrity were not breached by the broadside collision with the Valmont lighting standard, and the Valmont slip base activated as predicted.

The intrusion by the pole was limited by the truck’s frame rail. A minimal amount of intrusion must occur before the forces build enough to activate the slip base mechanism. The driver door and its internal door-beam were not stiff enough to activate the base before the pole had intruded a depth equal to the frame rail location (300 mm). The calculated occupant injury values were below current safety performance standards. Proper activation of the slip mechanism and a minor contact between the head and the pole contributed to the low risk of injury. The results from this broadside crash test, including vehicle crush profile, HIC, TTI, pelvic injury, and OIV are similar to the results from identical crash tests conducted at 35 km/h and 50 km/h (test number 97S012 and 97S015). The results from the 35-km/h and the 50-km/h tests can be found in the reports 35-km/h Broadside Crash Test of a 1994 Chevrolet C2500 and a Valmont Industries Slip Away Lighting Standard: FOIL Test Number 97S012⁽⁴⁾ and 50-km/h Broadside Crash Test of a 1994 Chevrolet C2500 and a Valmont Industries Slip Away Lighting Standard: FOIL Test Number 97S015.⁽⁵⁾ Additional test results from broadside crash tests between a Chevrolet C2500 and narrow objects can be found in the reports 35-km/h Broadside Crash Test of a 1994 Chevrolet C2500 and the FOIL 300K Rigid Pole: FOIL Test Number 97S016⁽⁶⁾ and 50-km/h Broadside Crash Test of a 1994 Chevrolet C2500 and the FOIL 300K Rigid Pole: FOIL Test Number 97S017.⁽⁷⁾ The crush profile, electronic data, and high-speed film will aid computer simulation engineers in developing and validating finite element models of pickup trucks and of collisions between a pickup truck and a slip base lighting standard.