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 long-term roadworks on rural roads including partial closures and detours. This Handbook
HB 81.9-2000 history
2003HB 8199-2002 Flared type symmetric union tee with swivel nut (8199)
1970HB 81.9-2000 Field guide for traffic control at works on roads - Long-term partial closures and detours on rural roads