Conclusions and comparisons of EISL options

	EISL A	EISL B
Distance from station to airport terminal	1,700m	300m
Link from station to terminal	Automatically controlled elevated shuttles	Moving walkway
Trains per hour each way – Phase 1 – Phase 2 – Phase 3	8 12 17	4 9 17
Capital cost – Phase 1 – Phase 2 – Phase 3 – Total (phased)	£534m £130m £226m £890m	£249m £283m £150m £682m
Capital cost – simultaneous build	£844m	£600m
Additional operating and maintenance costs	~£6m p.a.(inc. airport shuttle)	~£2.6m p.a.
Minimum rail curve radius – E&G line – Airdrie – Bathgate line – Fife loop	1000m 1000m 800m	625m 500m 625m
Track elevation at station – Westbound – Eastbound	+58m +43m	+28m +28m
Steepest uphill gradient – E&G line – Airdrie – Bathgate line – Fife loop	1:250 1:250 1:115	1:110 1:85 1:100
Steepest downhill gradient – E&G line – Airdrie – Bathgate line – Fife loop	1:100 1:100 1:60	1:110 1:50 1:50
Lowest speed constraint – E&G line – Airdrie – Bathgate line – Fife loop	80mph 80mph 70mph	65mph 40mph 65mph
Journey time increase (including 150 seconds dwell at station) – E&G line – Airdrie – Bathgate line – Fife loop	4 min 4 min 7 min	5 min 6 min 7 min
Airport expansion restrictions	None	Some minor redesign of expanded terminal and apron
RHC relocation restrictions	Redesign of new RHC to include station and expansion south to M8	None

Table 5: Principal characteristics: EISL A and EISL B

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