Appendix One The M25 Widening Project: Timeline of events

Year

Month

Related events

The Active Traffic Management (ATM) Project - Related events

NAO comment

1996

 

 

Netherlands and Germany introduce trials of hard shoulder running

 

1997

 

 

 

 

1998

 

 

 

 

1999

 

 

 

 

2000

August

Orbit Report commissioned

ATM announced

Agency considers M25 for the ATM trial but rejects it in favour of the M42

 

2001

July

 

Department announces M42 ATM trial

Five years after it had been trialled in Europe

2002

November

Orbit Report published

 

 

2003

March

 

Construction begins on the M42 ATM trial

 

 

July

Secretary of State responds to the Orbit Report. The Government announces its intention to proceed with the project to widen five sections of the M25

 

 

2004

April

The five M25 widening schemes enter into the Highways Agency Programme. Construction expected to start in May 2007. The procurement strategy has not been decided at this stage

 

 

 

November

 

NAO reports that the Agency is too risk-averse in testing measures such as ATM

 

2005

May

Construction start put back to May 2008 during consultation with industry. The Agency had by now decided to widen four sections using private finance

 

 

 

July

Section 3 M25 : Contract awarded to Costain

ATM construction finished

 

 

November

M25 Notice in the Official Journal of the European Union

Three lane variable mandatory speed limits in place on M42

 

2006

September

 

The Agency introduces hard shoulder running on the M42

Five years after the Agency's trial was announced

2007

May

One of the M25 bidders asked if it could submit ATM variant bid

Agency concludes that ATM should be seriously considered

Agency considers mandating a compulsory variant for ATM

 

 

 

June

Legal advisers state that allowing ATM variants could be challenged in the courts. The Agency recommends to the Secretary of State to proceed with the widening and to disallow the variants

 

 

 

June

Work begins on Section 3 of the M25

 

 

 

July

Secretary of State in response to the Agency's recommendation confirms his approval to proceed with the widening

Agency declines the ATM variant

 

 

 

October

 

Interim six month report on the monitoring and evaluation of Active Traffic Management published

 

2008

March

 

Advanced Motorway Signalling and Traffic Management Feasibility Study (ATM feasibility study) identifies a number of sections of the motorway network that would benefit from controlled use of the hard shoulder

 

 

March

Secretary of State asks for reassurance on widening rather than using ATM. Agency recommends proceeding with the widening and the Secretary of State agrees

 

 

 

May

Preferred bidder selected

 

 

 

July

Construction widening work on Section 3 of the M25 completed

12 month report on the evaluation of the ATM trial published

 

 

October

 

60mph hard shoulder running in place on M42

 

2009

January

 

Britain's Transport Infrastructure Motorways and Major Trunk Roads published stating that ATM will be rolled-out nationally identifying savings on average of 40 per cent but up to 60 per cent over widening

Eight years after the Agency's trial was announced, 13 years after trials started in Europe

 

May

ATM likely to be used for Sections 2 and 5 of the M25

 

 

 

May

M25 contract awarded