The Caltrans pilot program began on the 5 Freeway in northern San Diego County, where drivers began encountering orange and white lane striping through the Build North County Corridor Project as ...

It appears that rather than buying commercial units, Caltrans was testing its own designs for attenuators, all of which were based on honeycomb aluminum called Hexcell. They state that the ...

Although Caltrans’ official policy requires the replacement of crash attenuators and other safety hardware within one week, the agency has a history of missing the mark, the NTSB report found.