Page:UK Traffic Signs Manual - Chapter 8 - Part 2- Traffic Safety Measures and Signs for Road Works and Temporary Situations) - Operations 2009.pdf/189

A2 APPENDIX — GLOSSARY A2.19The term “direction XX” means the appropriately numbered direction in the General Directions. (The N.I instrument does not include directions.)

A2.20“Dual carriageway road” means a road which comprises a central reservation or two separate carriageways for travel in opposing directions. This term includes motorways. An “all-purpose dual carriageway road” means a dual carriageway road which is not a motorway.

A2.21“Emergency Traffic Management (ETM)” means short-term traffic management required to protect both those involved in an incident and any other road users affected by that incident during the period before fully compliant traffic management can be installed.

A2.22“Emergency works” means works which are required in order to put an end to, or prevent the occurrence of circumstances which are likely to cause danger to persons or property.

A2.23“Facing wall” means a set of cones that directly faces the flow of traffic and guides the traffic along the required path.

A2.24“Fixed-time operation” means control of traffic by signals in which the change of signal indications from one traffic stream to another is automatic at times predetermined by the settings of the signal controller.

A2.25“Flat traffic delineator” means a device complying with the relevant requirements of regulation 56 (in Northern Ireland, regulation 45). A specification for flat traffic delineators is given in BS8442.

A2.26“Full contra-flow” means a road works traffic management scheme where all traffic on both carriageways travels past the works area on the secondary carriageway.

A2.27“General Directions” means the Traffic Signs Regulations and General Directions 2002 (SI 2002 No. 3113) and subsequent Amendment Regulations and Amendment General Directions. (The N.I instrument does not include directions). In Wales “the Directions” also include the Traffic Signs (Welsh and English Language Provisions) Regulations and General Directions 1985 (SI 1985 No 713).

A2.28“Good visibility” means visibility extending to the full length of the stopping sight distance. For site stopping distances see TD 9 “Highway Link Design” (DMRB 6.1.1), Table 3.

A2.29“Guide island” means a temporary island usually of one lane width used to control or marshal traffic, e.g. on the approach to the controlled area.

A2.30“High-speed road” means a single or dual carriageway road which is subject to a permanent speed limit of 50 mph or more.

A2.31“Highway” means the area between the boundary fences including verges, shoulders, medians, footways, cycle tracks and carriageways.

A2.32“Highway Authority” is defined by the New Roads and Street Works Act 1991 as having the meaning given in Highways Act 1980 or in Scotland the meaning of “roads authority” as given in the Roads (Scotland) Act 1984.

A2.33“Heavy goods vehicle” (HGV) is defined as one with a maximum gross laden weight in excess of 7.5 tonnes.

A2.34“Hours of darkness” means the time between half an hour after sunset and half an hour before sunrise. 187