Engaging Multiple Actors in Large-Scale Transport Infrastructure Project Appraisal: An Application of MAMCA to the Case of HS2 High-Speed Rail

Table 1

Appraisal process. Novelty: ✓ = original research; (✓) = known method, novelty in implementation.

Stage	Appraisal step	Conducted how	By whom	Novel	In section
Questionnaire Design	Define objectives	Predetermined	(1)		3.3.1
	Define list of project options	Predetermined (mostly)	(2) + research team		3.3.2
	Define list of assessment criteria	Predetermined	(3)		3.3.3
	Define stakeholder groups of interest	Develop questions to elicit respondent traits	Research team	✓	3.3.4
Response Elicitation	Select criteria from list	Binary/Mark any number	Survey respondents	✓	3.4.1
	Weight selected criteria	Direct weighting	Survey respondents	(✓)	3.4.2
	Assess project performance for selected criteria	Pairwise comparison of projects (multiplicative AHP) for each criterion	Survey respondents	(✓)	3.4.3
Data Analysis	Average performance assessments across all respondents for each criterion	Geometric mean of all assessments (multiplicative AHP) for each criterion	Research team		4.1
	Assign respondents to stakeholder groups	Decision rules based on respondent traits	Research team	✓	4.2
	Calculate criteria weights for each stakeholder group	Arithmetic mean of group members’ weights for each robust criterion	Research team		4.3
	Calculate project preferences for each stakeholder group based on own criteria weights and all-respondent performance assessments	Multiplicative aggregation	Research team		4.4

Sources: (1) HS2 Ltd [19]; (2) HSR along M1 motorway: HS2 Ltd [20]; WCML upgrade: Atkins and HS2 Ltd [21, 22]; (3) Barradale and Cornet [23]