The standard drawing for the TCB-1 temporary concrete barrier system has been updated (now revision 3) to:
The revised drawing replaces all previous versions. Barrier units manufactured to previous drawings may remain in service but from date of this notice all new units must be manufactured to the new drawing.
Author: NZ Transport Agency
Published: September 2015
Version: Rev 3
Found at: www.nzta.govt.nz/roads-and-rail/road-engineering/road-safety-hardware/standard-drawings/
Contact Julian Chisnall of the HNO Traffic and Safety team at email@example.com.