TY  - JOUR
PY  - 1973//
TI  - Evaluation of breakaway light poles for use in highway medians
JO  - Highway research record
A1  - Walton, N. E.
A1  - Hirsch, T. J.
A1  - Rowan, Neilon J.
SP  - 123
EP  - 136
VL  - 460
IS  - 
N2  - Crash tests were conducted to determine the impact behavior of medianmounted light poles and secondary collisions of vehicles striking downed poles on a traffic lane. A relative hazard index was developed to describe the relative hazard created by the proximity and frequency of light poles. It was concluded that a 20-deg impact by a 2,900-lb vehicle at 45 mph would not cause a pole to encroach on the opposing traffic lane if the median is 40 ft wide. A 4,000-lb vehicle impacting at 25 deg and 60 mph would cause a pole to encroach approximately 11 ft into the opposing lane. Under both conditions, the impacting vehicle would cross into the opposing lanes and might be more of a hazard than the poles themselves. A medium-sized vehicle impacting a downed pole within the traffic lane presents no more hazard than the original impact. From a relative hazard standpoint, medianmounted luminaire systems produce less hazard than house-side systems for median widths of 30 ft or greater. /author/<p /> <p>Language: en</p>
LA  - en
SN  - 0073-2206
UR  - http://dx.doi.org/
ID  - ref1
ER  -