https://www.transport.gov.scot/media/33332/scotrail-franchise-itt-4855286-45.pdf
Bidders shall ensure that on all inter-city services they only use rolling stock that, in addition to all the existing passenger facilities, complies with the following minimum specification. The full requirements are set out in Appendix 3 (Rolling stock quality specification (passenger facing element)) and Schedule 6.2 (Inter-city Rolling Stock) of the Franchise Agreement.
• High quality and safe passenger environment consistent with modern inter-city passenger rolling stock in the UK and Europe. This condition is to be maintained throughout the Franchise Term, by means of an interior refresh if necessary;
• Bogied vehicles;
• Standard Class accommodation with a seating density no greater than a 2+2 seat configuration;
• Where First / Business Class is provided, a clear differentiation between quality of First / Business and Standard Class accommodation;
• Seats aligned with windows where practicable and where this does not lead to a significant loss in capacity or unacceptable leg room;
• Air conditioning and appropriate heating, including during station stops;
• Toilet provision: where routes and services in Scotland are operated currently with rolling stock that have controlled emission toilets installed, this must continue. Where routes and services in Scotland are operated currently with rolling stock that do not have controlled emission toilets installed, Bidders must provide evidence of a plan to provide rolling stock for that route and service that will have CET retention tanks installed on or before 1 January 2020. Any rolling stock which does not have CET retention tanks installed from the commencement of the ScotRail franchise shall have a reliable means by which toilets are prevented from emptying whilst the train on which they are equipped is stationary within stations until 1 January 2020;
•Facilities for storing large items of luggage within sight/proximity of passengers when seated – which in terms of capacity should be taken to be the same as provided currently on a ScotRail Class 170 with the addition of an extra luggage stack in each carriage which will occupy the space of approximately two seats; overhead racks for airline cabin style luggage, flexible space for pushchairs/prams and cycle storage facilities (minimum 2 cycles per 3 car multiple unit or equivalent);
• Wi-Fi (capability fully compatible with modern standards);
• 230V power sockets (one per pair of seats) capable of charging a laptop, mobile phone or similar device;
• Tables at all seats (may be fixed or folding);
• No more than 50% of the seats to be ‘airline’ style layout;
• Design to maximise comfort for standing passengers at peak times, e.g. space and handhold provision;
• Bodyside door locations / width and interior layout to facilitate rapid boarding and alighting; and
• Ability to support at least an at-seat catering service which is available to all passengers.