This Handbook comprises an illustrated plain English field guide intended for both the training of, and use in the field by, junior supervisory personnel involved in short-term night-time roadworks extending for no more than one night. The Handbook inclu
HB 81.4-1998 history
2003HB 8194-2002 Flared type symmetric union tee with swivel nut (8194)
1970HB 81.4-1998 Field guide for traffic control at works on roads - Short-term night works