National Transportation Safety Board Washington, D.C. 20594 Safety Recommendation 1

摘要

On October 22, 2009, about 10:38 a.m. eastern daylight time, a 2006 Navistar International truck-tractor in combination with a 1994 Mississippi Tank Company MC331 specification cargo tank semitrailer (the combination unit), operated by AmeriGas Propane, L.P., and laden with 9,001 gallons of liquefied petroleum gas, rolled over on a connection ramp after exiting Interstate 69 (1-69) southbound to proceed south on Interstate 465 (1-465), about 10 miles northeast of downtown Indianapolis, Indiana.1