(12 Oct 2023, 1:43 pm)streetdeckfan wrote It would be really interesting to see the then fuel economy figures for each of the vehicle types.

For higher speed stuff, I wonder how the B9s compare to the likes of the Streetdeck which despite having more efficient engines have less gears to work with. So at higher sustained speeds the more advantageous gearing in the B9s might mean overall they use similar amounts of fuel. And given the price of acquiring Streetdecks compared to keeping the B9s (or acquiring cheap used ones), that might tip the overall cost in favour of the much older B9s.

Wouldn't be any StreetDecks involved in the 56. With movement from Percy Main, suggestion would be:

B9TL:
- 6099 & 6100 Riverside > Deptford (for 56)
- 6101 - Stays at Percy Main as spare
- 6102 Percy Main > Deptford (for 56)
- 6103-09 Percy Main > Washington (for 50)
- 6110-17 Stay at Percy Main (for 309)

StreetDeck:
- 6301-07 Washington to Percy Main (for 307 and 1x spare)