Understanding the effects of resolving nautical bottlenecks on the Danube: a KPI-based conceptual framework

European Transport Research Review

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Table 4 Overview of the literature for each KPI

	Performance indicators	Literature no. (references below)
	Performance indicators	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21
IWT-related KPIs	Transport duration				x		x	x	x	x		x	x	x	x
	Fuel consumption						x		x	x			x		x
	Transport supply	x	x	x	x	x	x	x	x	x	x	x	x	x	x			x		x	x
	Transport costs		x	x	x		x			x	x	x	x	x	x	x			x	x	x
	Vessel draft	x		x	x	x	x	x			x	x			x		x					x
	Transport emissions						x		x	x			x		x
Market-related KPIs	Transport demand			x						x		x		x
Market-related KPIs	Modal share										x	x	x			x			x		x
Location-related KPIs	Throughput (at specific geographic location)										x	x
Location-related KPIs	Fairway depths	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x

1. Li et al. [29] 2. Sys et al. [44] 3. van Hassel and Rashed [49] 4. Christodoulou et al. [9] 5. van Dorsser et al. [48] 6. Meißner et al. [33] 7. Du et al. [10] 8. Hekkenberg et al. [21] 9. Riquelme-Solar et al. [38] 10. Haselbauer et al. [19] 11. Hoffmann et al. [23] 12. Hekkenberg [20] 13. Jonkeren et al. [26] 14. Schweighofer [40] 15. Beuthe et al. [5] 16. Backalic et al. [1] 17. Scholten et al. [39] 18. Jonkeren et al. [25] 19. Koetse and Rietveld [28] 20. Jonkeren et al. [27] 21. Sheng et al. [41]