1. Western Orbital: M11 J11 Park and Ride Provision
Business Case Development 2018

2. Strategic Outline Business Case Access / Egress Concepts
Content
Outline Programme
Strategic Outline Business Case
Access / Egress Concepts
Multi Criteria Assessment
Next Steps - Consultation
13/02/2018
Mott MacDonald | Presentation

3. 1. Outline Programme

4. Outline Programme Dates Stage March 2018
Strategic Outline Business Case complete
(option short list will be identified)
March – April 2018
Design development for short list options
April – mid-May 2018
Detailed appraisal of short list options (modelling, economic, environmental, social impacts, costs)
June – early Aug 2018
Public consultation
End September 2018
Draft Outline Business Case complete (covers all short list options, indicates preferred option)
End October 2018
Outline Business Case complete
December 2018
Approval to progress preferred option to Full Business Case
13/02/2018
Mott MacDonald | Presentation

5. Business Case stages March 2018 End Sept 2018 2019 Strategic Strategic
Strategic Outline Business Case (SOBC)
Outline Business Case (OBC)
Full Business Case (FBC)
Preferred option selection
Decision to commence detailed design / statutory procedures
Option short list
Commence more detailed appraisal
Public consultation
Strategic
Strategic
Economic
Financial
Commercial
Management
Strategic
Economic
Financial
Commercial
Management
Economic
Financial
Commercial
Management
13/02/2018
Mott MacDonald | Presentation

6. 2. Strategic Outline Business Case (SOBC)

7. SOBC Scope WebTAG: The Transport Appraisal Process (DfT, 2014)
13/02/2018
Mott MacDonald | Presentation

8. SOBC Development Use previous work (issues well documented) Context
Objectives
Context
Issues / need for intervention
Concepts, packaging & option sifting
Option Short List (for detailed appraisal / consultation)
Use previous work (issues well documented)
But must provide rationale for this specific P&R scheme
Objectives need to be specific to area of focus
Existing Policy / Strategy
SEP
LDPs
LTP
TSCSC
Previous Western Orbital development work
SOBC complete
OBC commences
13/02/2018
Mott MacDonald | Presentation

9. Objectives – must be linked to identified issues
To reduce general traffic levels and congestion
1.1: Congestion Hauxton Rd / Addenbrooke’s Rd / Trumpington [TrafficMaster evidence].
1.2: Congestion M11 J11, AM peak worse [TrafficMaster evidence]
To maximise the potential for journeys to be undertaken by sustainable modes of transport
2.1: Journey to work in Cambridge, high % by car from M11(S) and A10 [Census data]
2.2: Trumpington P&R insufficient for forecast employment growth at Cambridge Biomedical Campus [previous transport modelling]
2.3: P&R buses caught in congestion on Trumpington Rd – reduces advantage over car
13/02/2018
Mott MacDonald | Presentation

10. Objectives (draft wording)
To reduce general traffic levels and congestion
1.1: Reduce traffic NE of M11 J11 (Hauxton Road and Trumpington), by encouraging trips headed for the city centre and Cambridge Biomedical Campus to transfer to another mode.
1.2: Reduce traffic flow and delay at M11 J11, particularly in the AM peak, including flows associated with non-motorway traffic (A10-A1309).
To maximise the potential for journeys to be undertaken by sustainable modes of transport
2.1: Increase sustainable transport mode share for trips into the city centre and Cambridge Biomedical Campus, focused on trips originating from the south and SW (M11 and A10).
2.2: Increase Park and Ride parking capacity to serve forecast growth at the Cambridge Biomedical Campus key employment area, with delivery aligned to overall Campus development timescales.
2.3: Reduce bus journey times between Trumpington and the city centre, enabling bus / Park and Ride journeys to compete more effectively with the private car.
13/02/2018
Mott MacDonald | Presentation

11. Multi Criteria AssessmentB D
J11 E C
Sifting
P&R Site Location
Sift Tier 1
Locations for major expansion
Assess against objectives
Remove locations that would not be able to address objectives
Develop long list of concepts for remaining area(s) – create option packages
Obj. A B C D E
1.1
Retained - compare with new site
1.2
2.1
2.2
2.3
Complementary bus priority measures required
Environmental constraints under review
‘Do Nothing’ retained throughout
Trumpington expansion (A) retained
Sift Tier 2
Option long list
Multi Criteria Assessment
Short list (for more detailed appraisal & public consultation)
13/02/2018
Mott MacDonald | Presentation

12. Sifting At Sift Tier 2 (Multi Criteria Assessment) also need to:
Assess options and identify short list for Park and Ride bus service – for example, should Trumpington Rd and Busway corridors be served from both existing and new sites?
Assess Park and Ride traffic signing options where more than one site – by traffic origin, or by ultimate destination?
Consider bus priority options for Trumpington Road
13/02/2018
Mott MacDonald | Presentation

13. 3. Access / Egress Concepts

14. Red Bus lane General traffic route Mott MacDonald | Presentation
13/02/2018
Mott MacDonald | Presentation

15. Blue Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

16. Purple Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

17. White Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

18. Yellow Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

19. Black Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

20. Orange Bus lane General traffic route 13/02/2018
Mott MacDonald | Presentation

21. 4. Multi-Criteria Assessment

22. Multi Criteria Assessment – Proposed criteria
Selection Theme 1
Reducing traffic levels & congestion
(linked to first set of objectives)
Traffic flows on J11 circulatory
Traffic flows on A1309 Hauxton Rd arm
Change in overall delay at J11
Change in delay on A10 between Harston and J11
Selection Theme 2
Maximising potential for journeys to be undertaken by sustainable modes
(linked to second set of objectives)
P&R bus journey time reliability
Car access time to P&R from M11 northbound
Car access time to P&R from A10 northbound
Potential to link with wider Western Orbital proposals
Potential to link with existing public transport services
Mott MacDonald | Presentation
13/02/2018

23. Multi Criteria Assessment – Proposed criteria
Selection Theme 3
Quality of life & environment
(WebTAG Appraisal Summary Table)
Change in number and severity of road accidents (conflict points)
Noise
Air quality
Landscape / visual impact
Historic environment
Biodiversity
Water environment
Selection Theme 4
Scheme deliverability
(financial & management sections of business case)
Engineering feasibility (construction risk)
Impact of construction on existing network
Land acquisition requirement
Complexity of statutory processes
Ability to maintain and renew new infrastructure
Ongoing cost implications
Mott MacDonald | Presentation
13/02/2018

24. High level cost estimate
Multi Criteria Assessment – Proposed approach
Selection Theme 1
Reducing traffic levels & congestion
Normalise theme score
Weighting: 25%
Selection Theme 2
Maximising potential for journeys to be undertaken by sustainable modes
Normalise theme score
Weighting: 25%
Selection Theme 3
Quality of life & environment
Normalise theme score
Weighting: 25%
Discard any option where a Large Adverse impact is expected for any criteria in this theme
Selection Theme 4
Scheme deliverability
Normalise theme score
Weighting: 25%
Total Score / Rank
High level cost estimate
Mott MacDonald | Presentation
13/02/2018

25. 5. Next Steps - Consultation

26. Next Steps – Engagement & Consultation
P&R option short listing workshop: Early March 2018
Trumpington Rd bus priority consultation: Late March 2018
Public consultation on short list options: June – Early August 2018
Stakeholder discussion sessions: July – Oct (if required)
14/09/2019
Mott MacDonald | Presentation

27. Thank you