Interim Advice Notes (IANs)
Interim Advice Notes (IANs) are issued by the Highways Agency from time to time. They contain specific Guidance, which shall only be used in connection with works on motorways and trunk roads in England, subject to any specific implementation instructions contained within an IAN.
Whilst IANs must be read in conjunction with the Design Manual for Roads and Bridges (DMRB) and Manual of Contract Documents for Highway Works (MCHW) for the above works, and may incorporate amendments or additions to documents in these manuals, they are not part of the DMRB or MCHW
If you require further information please contact the Specifications & Standards Policy Team by email to standards_enquiries@highways.gsi.gov.uk
| No. | Title | Manual Ref. | Author | Issue Date | Comments |
|---|---|---|---|---|---|
| The use of foamed concrete | Neil Loudon | Oct 09 | |||
| Environmental Impact Assessment: Reporting of Determination and Publication of Notices | DMRB 11 | David Hinde | Oct 09 | ||
| Supplementary guidance for users of DMRB Volume 11 ‘Environmental Assessment’ | DMRB 11 | David Hinde | Oct 09 | ||
| IAN 124/xx | Eurocodes: Implementation of Eurocodes for the design of new and existing highway structures. | DMRB 1 | Hideo Takano | Pending | |
| IAN 123/xx | Eurocodes: Interim requirements for technical approval of highway structures. | DMRB 1 | Hideo Takano | Pending | |
| Rapid Condition Assessment of Hard Shoulder Pavements. Interim guide to data and maintenance advice | Louise Caldwell | Jun 09 | |||
| Advice regarding implementation of Integrated Traffic Management | Seth Kugblenu | Jun 09 | |||
| IAN 120/xx | Directional and informational signs Part B | Mark Pooley | Pending | ||
| IAN 119/xx | Directional and informational signs Part A | Mark Pooley | Pending | ||
| IAN 118/xx | Consolidation of Motorway Signalling Technology Standards | Brian Oliver | Pending | ||
| Certification of combined kerb and drainage products | Jim Gallagher | Jun 09 | Supersedes IAN 117/08 | ||
| IAN 117/08 | Certification of combined kerb and drainage products | Jim Gallagher | Nov 08 | Withdrawn Superseded by IAN 117 rev1 |
|
| Nature conservation advice in relation to bats | David Hinde | Oct 08 | |||
| Hard shoulder working | Paul Mitchell | Nov 08 | |||
| Highways Agency Carbon Calculation and Reporting Requirements | Geoff Richards | Sept 08 | |||
| Temporary Automatic Speed Camera System for the Enforcement of Mandatory Speed Limits at Roadworks (TASCAR) | Jamie Hassall | July 08 | |||
| Managed Motorway Implementation Guidance – Through Junction Hard Shoulder Running [PR 100/08] | Brian Barton | Jun 08 | |||
| Managed Motorways implementation guidance - Hard shoulder running | Max Brown | Nov 09 | |||
| IAN 111/08 | Managed Motorway Implementation Guidance – Dynamic Use of Hard Shoulder [PR 99/08] | Brian Barton | Jun 08 | Withdrawn and superseded by 111/09 | |
| IAN 110/08 | Assessment Of Implications (Of Highways Plans And Projects) On European Sites (Including Appropriate Assessment) | Stuart Wilson | Apr 08 |
Withdrawn Superseded by HD 44/09 |
|
| Advice Regarding the Motorway Signal Mark 4 (MS4) | Brian Oliver | Apr 08 | |||
| IAN 108/xx | Not issued | ||||
| Variable Demand Modelling As Part Of A Transport Assessment For The Highways Agency | Malcolm Walker | Feb 08 | |||
| Guidance Note for Traffic Consultants Employed on Highways Agency Schemes | DMRB 12 | Malcolm Walker | Jan 08 | ||
| Implementation of Construction (Design and Management) 2007 and the withdrawal of SD 10 and SD 11 | SD 10 SD 11 |
Steve Williams | Jan 08 | ||
| The Anchorage of Reinforcement & Fixings in Hardened Concrete | Colin George | Dec 07 | |||
| Ramp metering | Mark Austin | Mar 08 | Supersedes IAN 66/05 | ||
| IAN 102/07 | The introduction of BS EN standards for bituminous mixtures - Site supervision aspects | MCHW 900 | Donna James | Nov 07 | Withdrawn Superseded by MCHW Series 900 |
| IAN 101/07 amnt1 |
Revised MCHW Specification 900 Series - Amendment No. 1 | MCHW 900 | Wyn Lloyd | Feb 08 | Withdrawn Superseded by MCHW Series 900 |
| IAN 101/07 | Revised MCHW Specification 900 Series | MCHW 900 | Wyn Lloyd | Nov 07 | Superseded by IAN 101 amnt1 |
| Cultural Heritage Asset Management Plans | DMRB 10 | Antonia Glyde | Oct 07 | Read in conjunction with IAN 84/07 | |
| Implementation of Local Grid Referencing System for England | SD 12/96 | Andrew Jukes | Nov 07 | Read in conjunction with SD 12/96 | |
| HD 28 / Guidance for HA Service Providers on Implementing the Skid Resistance Policy | HD 28 | Louise Caudwell | Sept 07 | ||
| Assessment and upgrading of existing parapets | Richard Janowski | Aug 07 | Supersedes TD 19/06 (In Part) BA 37/92 IAN 72/06 |
||
| Guidance On Implementing Results Of Research On Bridge Deck Waterproofing | Jim Gallagher | July 07 | Read in conjunction with BD 47/99 | ||
| IAN 96/07 | Guidance On Implementing Results Of Research On Bridge Deck Waterproofing | Jim Gallagher | Jul 07 | Superseded by IAN 96/07r1 | |
| Revised guidance regarding the use of BS8500(2006) for the design and construction of structures using concrete | Neil Loudon | May 07 | Supersedes IAN 74/06 | ||
| IAN 94/07 | HA 207 - Air Quality | HA 207 | Michelle Hackman | Apr 07 | Superseded by HA 207/07 |
| Driver location signs - Interim Performance Specification | Mark Pooley | Apr 07 | |||
| IAN 92/07 | Environmental Topics. DMRB 11.3.2 Cultural Heritage | Vol 11 | Antonia Glyde | Mar 07 | Replaced by HA 208/07 |
| Interim Advice on the identification of 'Particularly at Risk' Supports | Ron Ko | Mar 07 | |||
| Guidance For The Use Of Rapid Setting Emergency Repair Materials | MCHW Series 900 | Andrew Vigrass | Apr 07 | Replaces IAN 90/07 | |
| IAN 90/07 | Guidance For The Use Of Rapid Setting Emergency Repair Materials | MCHW Series 900 | Andrew Vigrass | Apr 07 | Replaced by Amendment No. 1 |
| IAN 89/07 | Appraisal Of New And Replacement Road Lighting On The Strategic Motorway And All Purpose Trunk Road Network | TA 49 | Nick Fairfax - Franklin | Mar 07 | Superseded by TA 49/07 |
| IAN 88/07 | Design Of Road Lighting For The Strategic Motorway And All Purpose Trunk Road Network | TD 34 TD 30 |
Nick Fairfax - Franklin | Mar 07 | Superseded by TD 34/07 |
| The Provision Of Signal Gantries For Motorways With Four Or More Running Lanes | David Enticknap | Mar 07 | |||
| Amendments To Design Requirements For Portal And Cantilever Sign/Signal Gantries | BD 51 | Brian Allison | Jun 07 | Read in conjunction with BD 51 | |
| Design Of Passively Safe Portal Signal Gantries | Ian Mills | Jun 07 | |||
| Environmental Information System (EnvIS) | Vol 10 | Peter Groutage | Jul 07 | Read in conjunction with Vol 10 DMRB | |
| Principal and General Inspection of Sign/Signal Gantries, and Gantries with low handrails or open mesh flooring | Brian Allison | Jun 06 | Supplements BD 63 & BA 63 | ||
| IAN 82/06 | Reporting | HD 48 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HD 48/08 |
| IAN 81/06 | Management of Environmental Effects | HA 205 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HA 205/08 |
| IAN 80/06 | Scoping | HA 204 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HA 204/08 |
| IAN 79/06 | Screening | HA 203 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HD 47/08 |
| IAN 78/06 | Environmental Assessments | HA 202 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HA 202/08 |
| IAN 77/06 | Introduction | HA 201 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HA 201/08 |
| IAN 76/06 | Aims & Objectives of Environmental Assessment | HA 200 | Dean Kerwick-Chrisp | Jun 06 | Withdrawn Superseded by HA 200/08 |
| Code of Practice for Emergency Access to and Egress from the Trunk Road Network in England | Trevor Hunt | May 06 | Read conjunction with IAN 68 | ||
| IAN 74/06 | Revised Guidance Regarding The Use Of BS8500 For The Design And Construction Of Structures Using Concrete | Neil Loudon | Mar 06 | Superseded by
IAN 95/07 Replaces IAN 58/04 |
|
Rev 1 |
Design of Pavement Foundations | HD 25/xx | Wyn Lloyd | Feb 09 | Draft HD 25/xx |
| IAN 72/06 | Interim Advice On The Upgrading Of Existing Parapets | BA 37/92 | Daniel Ruth | Feb 06 | Superseded by IAN 97/07 Read in conjunction with BA 37/92 |
| Marker Posts On Lay-By Segregation Islands | TA 69/96 | Ian Sandle | Feb 06 | Amends TA 69/96 The Location and Layout of Lay-bys. | |
| Implementation Of New Reinforcement Standards (BS 4449:2005, BS 4482:2005, BS 4483:2005 and BS 8666:2005) | BS 5400 Pt 4, SHW 1700, NG 1700 | Colin George | Jan 06 | ||
| Designing for Maintenance | Mike Greenhalgh | Dec 05 | |||
| Infrastructure changes to improve emergency access to and egress from the trunk road network in England | Trevor Hunt | May 06 | Read conjunction with IAN 75 | ||
| IAN 67/05 SMIS | Structures Management Information System (SMIS) - The operational use of SMIS | BD 62/94, BD 63/94, BA 63/94, BD 53/94, BD 34/90 | Brian Allison | Sept 05 | Replaced by BD 62/07 Supersedes IAN 45/0 Supersedes IAN 38/01 |
| IAN 66/05 | Advice Regarding The Assessment Of Sites For Ramp Metering | Nanu Rayman | Aug 05 | Superseded by IAN 103/08 | |
| Design Of Vehicle Recovery Operations At Road Works | Nick Moreton | Apr 05 | Superseded by Traffic Signs Manual (TSM) Chapter 8 | ||
| Driver Information At Road Works | Paul Chute | Apr 05 | |||
| Asbestos Management Applicable To The Strategic Road Network | Chris Foreman | Oct 09 | Supersedes IAN 63/05r1 | ||
| IAN 63/05r1 | Asbestos Management Applicable To The Strategic Road Network | Chris Foreman | Feb 07 | Supersedes IAN 63/05 | |
| IAN 63/05 | Asbestos Management Applicable To The Strategic Road Network | Chris Foreman | Apr 05 | Superseded by IAN 63/05r1 | |
| IAN 62/05 | Management Of Highway Structures Handover And Related Inspections | Brian Hill | Feb 05 | Replaced by BD 62/07 Clarifies BD 63/94 | |
| IAN 61/05 | Guidance For Undertaking Environmental Assessment Of Air Quality For Sensitive Ecosystems In Internationally Designated Nature Conservation Sites And SSSIs | DMRB 11.3.1 | Michele Hackman | Mar 05 | Superseded by HA 207/07 Read in conjunction with DMRB 11.3.1 |
| The Introduction Of A New Highways Agency Policy For The Performance Requirements For Central Reserve Safety Barriers On Motorways | Daniel Ruth | Jan 05 | Superseded by TD 19/06 | ||
| Replacement Of SA 10/01, The New Roads And Highway Works Act 1991 - Diversionary Works | MCHW Vol 6. SA 10/01 | Chelliah Yogamoorthy | Nov 04 | Withdrawn. Replaced by SA 10 and SA 11. | |
| Changes to Concrete Specification affecting MCHW Interim Advice Note 52/04 guidance for structural concrete | Series 1700 & NG 1700 | Neil Loudon | Oct 04 | Superseded by IAN 74/06 Supersedes CHE 131/04 and IAN 52/04 |
|
| The Use Of Temporary Speed Limits At Road Works On High Speed Roads | TA 64 / 94 DMRB 8.4.3 | Paul Chute | Nov 04 | Superseded by Traffic Signs Manual (TSM) Chapter 8 Supersedes IAN 57/04 Supersedes relevant guidance TSM Chapter 8 and TA 64/94 |
|
| IAN 57/04 | The Use Of Temporary Speed Limits At Road Works On High Speed Roads | TA 64 / 94 DMRB 8.4.3 | Paul Chute | Aug 04 | Superseded by IAN 57/04 Rev 1. Supersedes relevant guidance TSM Chapter 8 and TA 64/94 |
| Maintenance Of Traffic Signs With Dew Resistant Coatings | TD 25 / 01 DMRB 8.2.2 | Sidney Xavier | Aug 04 | Read in conjunction with TD 25/01 | |
| Guidance On The Use Of European Standard BS EN 1317 - Road Restraint Systems | Various | Daniel Ruth | June 04 | Replaced by TD 19/06 (Aug 06) Read in conjunction with IAN 44 / 05 Amendment 1 | |
| Revision to "GOMMMS" Local Air Quality Assessment Procedure | DMRB 11.3.1 | Michele Hackman | Mar 04 | Superseded by HA 207/07 | |
| Concrete Half-Joint Deck Structures | Neil Loudon | Feb 04 | |||
| IAN 52/04 | Changes to Aggregate and Concrete Specification affecting MCHW Series 500, 600, 700, 800, 1700 and Notes for Guidance NG 100, NG 500, NG 600, NG 700, NG 800 and NG 1700. | MCHW Vol 1& Vol 2 | Keith Austin | Jan 04 | Superseded by IAN 58/04 |
| IAN 51/03 | Hinge Deck Structures | DMRB 3.1 | Neil Loudon | Jul 03 |
Withdrawn Superseded by BA 93/09 Supersedes IAN 40 |
| IAN 50/03 | Investigation Of Sites Identified From Skid Resistance Materials | DMRB 7.3 | Ramesh Sinhal | Mar 03 | Superseded by HD 28/04 |
| Use of Warning Signs For New Asphalt Road Surfaces | DMRB 7.5 | John Williams | Mar 03 | ||
| Measures To Minimise The Risk of Sulphate Attack (Including Thaumasite) - New Construction and Structures Under Construction | DMRB 2.1 | Neil Loudon | Jan 03 | Supersedes IAN 25 | |
| Post Tensioned Grouted Duct Concrete Bridges | DMRB 2.2 | Neil Loudon | Dec 02 | Supersedes IAN 16 | |
| IAN 46/02 | Revised Air Quality Assessment Procedure | DMRB 11.3.1 | Michele Hackman | Nov 02 | Superseded by DMRB 11.3.1 |
| IAN 45/02 | Structures Management Information Systems (SMIS) Phase IV, V and VI Fixing Structures Defects and System Integration | DMRB 3.1.4 DMRB 3.1.5 DMRB 3.2.1 | James Hardy | Nov 02 | Superseded by IAN 67 Supersedes IAN 38 |
| Interim Requirements for Road Restraint Systems (Vehicle and Pedestrian) Revision 4 | Various | Daniel Ruth | Aug 05 | Replaced by TD 19/06 Supersedes IAN 44/05 Rev. 3 | |
| IAN 44/05 Amnt 1 | Interim Requirements for Road Restraint Systems (Vehicle and Pedestrian) Amendment No. 1 | Various | Daniel Ruth | Jan 05 | Superseded by IAN 44/05 Rev. 04 Read in conjunction with IAN 55 Supersedes IAN 44/05 |
| IAN 44/05 Rev. 3 | Interim Requirements for Road Restraint Systems (Vehicle and Pedestrian) | Various | Daniel Ruth | Jan 05 | Superseded by IAN 44/05 Amnt 1 Supersedes IAN 44 / 02 Rev 2 |
| IAN 44/02 Rev. 2 | Interim Requirements for Road Restraint Systems (Vehicle and Pedestrian) | Various | Daniel Ruth | July 04 | Superseded by IAN 44/05 Rev 3 Supersedes IAN 44 / 02 Rev 1 |
| IAN 44/02 Rev. 1 | Interim Requirements for Road Restraint Systems (Vehicle & Pedestrian) | Various | Daniel Ruth | Aug 03 | Withdrawn Superseded by IAN 44 / 02 Rev 2 |
| IAN 44/02 | Interim Requirements for Road Restraint Systems (Vehicle & Pedestrian) | Various | Victoria Hodkinson | Sept 02 | WithdrawnSuperseded by IAN 44 Rev 1 |
| Cantilever and Portal Gantry VMS | TD 18/85, TD 33/90, TA 60/90, TD 46/94, TA 74/97, TA 83/99 | David Enticknap | Sept 02 | Withdrawn Superseded by TD 33/05, TD 46/05, TA 74/05 & TA 83/05 |
|
| IAN 42/05 | Traffic-Speed Condition Surveys (TRACS): Revised Assessment Criteria | DMRB 7.3.4 | Les Hawker | Feb 05 | Superseded by HD 29/08 Supersedes IAN 42/02 |
| IAN 42/02 | Traffic-Speed Condition Surveys: Revised Assessment Criteria | DMRB 7.3.4 | Les Hawker | Apr 02 | Supersedes IAN 33 |
| European Cement Standards | DMRB 1.3 | Neil Loudon | Jan 02 | ||
| IAN 40/01 | Hinge Deck Structure | DMRB 3.1 | Neil Loudon | Dec 01 | WithdrawnSuperseded by IAN 51 |
| Post Opening Project Appraisal (POPE) | DMRB 12.1.1 | Nick Fenton | June 01 | ||
| IAN 38/01 | Structures Management Information System | DMRB 3.1.5 DMRB 3.2.1 | James Hardy | May 01 | Superseded by IAN 67Superseded by IAN 45 |
| IAN 37/01 | Changes to Appraisal Methodology | DMRB 5 | Nick Fenton | May 01 | WithdrawnSuperseded by DfT WebTAG. Supersedes IAN 23 |
| The Use and Application of Micro-Simulation Traffic Models | DMRB 12 | Paul Ryder | June 01 | ||
| IAN 35/01 | Highway Improvement Schemes - Provision to be Made for Waterway Restoration Projects | DMRB 11.3.6 | Peter J Wilson | Mar 01 | Withdrawn<br>Incorporated in DMRB 11.3.6 |
| IAN 34/01 | TD 19/85 Varioguard Temporary Barriers | DMRB 2.2.8 | Brian Hill or Alan Smith | Jan 01 | Replaced by TD 19/06 Withdrawn if using IAN 44/05 |
| IAN 33/01 | HD 29/94 Traffic Speed Conditions Survey | DMRB 7.2.4 | Les Hawker | Jan 01 | WithdrawnSuperseded by IAN 42 |
| IAN 32/00 | Code of Practice for Traffic Control and Information Systems for All Purpose Roads | DMRB 8.1.1 | Alan Beckett | July 00 | Withdrawn Incorporated in TA 84/01 |
| BS 8666: 2000 Scheduling, Dimensioning, Bending and Cutting of Steel Reinforcement for Concrete | MCHW 1 Appendix F | Neil Loudon | July 00 | Withdrawn as of 1st June 2006 | |
| IAN 30/00 | Advice Manual for the New Roads & Street Works Act 1991 - Diversionary Works | MCHW 6.2 - Advice Notes | Chelliah Yogamoorthy | July 00 | Withdrawn Incorporated in SA10/01 & SA11/01 |
| HD 26 - Indeterminate Life Flexible Pavements | DMRB 7.2.3 | J. Williams | Mar 00 | Withdrawn (9/6/06) Superseded by HD 26/06 Supersedes IAN 12 |
|
| Highway Features - Trunk Road Calming | DMRB 6.3 | D. Hasen | Feb 00 | Withdrawn (9/6/06) Superseded by TA 87/04 |
|
| Motorway Signalling | DMRB 9.3.4 | Ken Larkin | July 99 | Withdrawn Superseded by TD 46/05 & TA 74/05 |
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| IAN 26/99 | TD 19/85 Safety Fences and Barriers | DMRB 2 | Brian Hill | May 99 | Withdrawn if using IAN 44/05 |
| IAN 25/99 | Measures To Minimise The Risk of Sulphate Attack | DMRB 2.1 | Neil Loudon | Mar 99 | Replaced by TD 19/06 Withdrawn Superseded by IAN 48. Supersedes IAN 15 |
| IAN 24/98 | Use of Temporary Safety Barriers At Road Works | DMRB 2.2 | P.Francis / A.Smith | Dec 98 | Replaced by TD 19/06 Withdrawn if using IAN 44/05 |
| IAN 23/98 | New Approach to Appraisal Document | DMRB 5 | Simon Price | Sept 98 | Withdrawn Superseded by IAN 37 |
| IAN 22 | Corrosion Protection Systems for Lighting Columns and Bridge Bearings | Awtar Jandu | Not issued | ||
| IAN 21 | Safety Fence Amendments | Victoria Hodkinson | Not issued | ||
| IAN 20 | Parapets | MCHW NG 2200 | Not issued | ||
| IAN 19 | Parapets, Appendix C-BBA Certificate | MCHW Series 2200 | Victoria Hodkinson | Not issued | |
| IAN 18 | Parapets | MCHW Series 2200 | Victoria Hodkinson | Not issued | |
| IAN 17 | Motorway Communications Clause 1530 & Guidance Note 1530 | MCHW Series 500 & NG 1500 | G.Thomas | Not issued | |
| IAN 16/99 | Post Tensioned Grouted Duct Concrete Bridges | DMRB 2.2 | Neil Loudon | Jan 99 | Withdrawn Superseded by IAN 47 |
| IAN 15/98 | Thaumasite Sulphate Attack New Construction & Structures Under Construction | DMRB 2.1 | Neil Loudon | May 98 | Withdrawn Superseded by IAN 25 |
| Use of Crash Cushions | DMRB 2.2 | P. Francis + B. Hill | Sept 98 | Superseded by Traffic Signs Manual (TSM) Chapter 8 Anticipated replacement by TD 19/06 (Aug 06) Withdrawn if using IAN 44/05 |
|
| IAN 13 | Not issued | ||||
| IAN 12/98 | Indeterminate Life Flexible Pavements | DMRB 7.2.3 | Ramesh Sinhal | Sept 98 | Withdrawn Superseded by IAN 29 |
| IAN 11/97 | Annex C Structural Method for Calculating MAFF | DMRB 4 .2.1 | DavidPatterson | Oct 97 | Withdrawn Incorporated in HA 71/95 |
| IAN 10/97 | Linear Drainage Channel Systems | MCHW Series 500 & NG 500 | Santi Santhalingam | Nov 97 | Withdrawn Incorporated in MCHW Vol 1 Clause 517 |
| IAN 09/97 | Linear Drainage Channel Systems | MCHW Series 500 & NG 1500 | Santi Santhalingam | Mar 97 | Withdrawn Incorporated in MCHW Vol 1 Clause 517 |
| IAN 08/96 | BA 63/94 Inspection of Highway Structures | DMRB 3.1.5 | Brian Hill | Sept 96 | Replaced by BD 63/0 |
| IAN 07/96 | BD 63/94 Inspection of Highway Structures | DMRB 3.1.4 | Brian Hill | Sept 96 | Replaced by BD 63/0 |
| IAN 06/96 | BD 62/94 As Built, Operative and Maintenance Records | DMRB 3.2.1 | Brian Hill | Sept 96 | Replaced by BD 63/07 |
| BD 24/92 The Design of Concrete Highway Bridges and Structures. Use of BS 5400: Part 4:1990 | DMRB 1.3.1 | Ben Sadka | July 96 | ||
| BD 44/95 The Assessment of Concrete Highway Bridges and Structures | DMRB 3.4.14 | Ben Sadka | July 96 | ||
| BA 50/93 Post Tensioned Concrete Bridges | DMRB 3.1.3 | Jack Halliday | June 96 | ||
| IAN 02/95 | The Non-Technical Summary | DMRB 11.4.3 | Dean Kerwick-Chrisp | Oct 95 | Withdrawn Superseded by IANs 76-82 |
| TD 37/93 Scheme Assessment Reporting | DMRB 5.1.2 | Simon Price | Oct 95 |
Italics indicate current owner of associated standard where the author for the IAN is no longer available
An up-to-date list in .pdf format of all IANs is available here