Since the imposition of the 55mph speed limit in 1974, accident data on the concrete median barriers (CMB) in California showed that the fatal + injury accident rates are increasing. The findings in this study indicate that this significant increase in rollovers since 1974 is undoubtedly due to (1) an increase in travel speeds, and (2) an increase in the number of small automobiles in the traffic stream. It is predicted that the rollover rate will continue to increase in the future and by 1985 it could be as high at 15%. Small automobiles seem to have a greater tendency to rollover on the CMB than the earlier standard size automobiles, for which the CMB was designed, because of their shorter wheel track widths and much lower roll-moment-of-inertia.
Feasibility Study of Retrofitting Concrete Median Barriers
1983
194 pages
Report
Keine Angabe
Englisch
Signs on Concrete Median Barriers
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