I am suggesting the route from Cardiff Central to Pontypridd and beyond is developed for Train Sim World. The Stations: The route would include the line from Cardiff Central to Merthyr Tydfil via Cardiff Queen Street. The stations would include: Cardiff Central Cardiff Queen Street Cathays Llandaf Radyr Taff's Well Treforest Estate (Treherbert line does not stop here) Treforest Pontypridd [Line splits for the Treherbert branch] Abercynon [Line splits for the Aberdare branch] Quakers Yard Merthyr Vale Troed Y Rhiw Pentre Bach Merthyr Tydfil At Pontypridd the line splits offering journeys up to Treherbert. The Treherbert line includes the following stations: Trehafod Porth Dinas Rhondda Tonypandy Llwynypia Ystrad Rhondda Ton Pentre Treorchy Ynysywen Treherbert At Abercynon the line splits offering journeys up to Aberdare. The Aberdare line includes the following stations: Penrhiwceiber Mountain Ash Fernhill Cwmbach Aberdare The trains: These stations are operated by Transport for Wales and use a combination of Class 142, Class 143 and Class 150/2 to service all of these stations. All of these units are two car units and multiple units are coupled together at peak times to help with demand. Usually this means coupling two units together and can sometimes be a mix of units. For example, a 150/2 leading with a 142 on the rear to add capacity. All three units are DMUs (diesel multiple units) and offer a notched throttle and braking. All three units use the same four step braking system - step 1, step 2, step 3, emergency. Both the class 142 and 143 units are due to leave service this year. Class 150/2: https://en.wikipedia.org/wiki/Briti.../File:Tondu_railway_station_MMB_10_150252.jpg Class 142: https://en.wikipedia.org/wiki/Briti...ile:Caerdydd_Canolog_-_Keolis_Amey_142076.JPG Class 143: https://en.wikipedia.org/wiki/British_Rail_Class_143#/media/File:143614_C_Cardiff_Central.JPG The Route: These lines see many passengers throughout the day with 2 trains per hour in each direction up in the valleys. The busiest section of the route is Cardiff Central to Pontypridd where all three lines are merged and seeing 6 trains per hour in each direction. The line offers the player to experience the token block system in operation. This is in operation on single lines. On the Treherbert line upon arrival at Porth the driver must exit the vehicle and call the signaller to request access the single track. If no train is occupying the line the driver gets given a token - a physical object to carry. The train is then allowed as far as Ystrad Rhondda which is a passing loop, the driver must then call the signaller and request permission to proceed to the end of the line at Treherbert. The token picked up at Porth is then placed back in Ystrad Rhondda and if the single line is free the train can proceed. Since TSW allows the player to navigate on foot this would be an opportunity for the player to leave the train during service with purpose - to go and get the token. If you're interested in token block system I've linked a Wikipedia article : https://en.wikipedia.org/wiki/Token_(railway_signalling) The route offers different environments for the player to experience. When starting in Cardiff Central you will see dense population with some high rise buildings and busy stations seeing much traffic around. When departing Radyr the line becomes more scenic with much greenery to see and landmarks such as Castell Coch (https://en.wikipedia.org/wiki/Castell_Coch) up in the hills as you travel up to Pontypridd however still very busy with trains only 5-10 minutes before and after you. When arriving into Pontypridd you will feel the effect of a busier area with Pontypridd being a very busy station during peak hours. As you depart Pontypridd you will again enter a more scenic environment however this time with much less traffic. Then you will get to experience the single line operations when further up the valleys. As the driver you must make sure to keep to the timetable as the slightest delay from you will cause trouble to others waiting to enter that section of track. After Pontypridd the stations aren't that exciting and usually just a simple platform however the route offers very scenic views everywhere and offers a good challenge to the player and tests their driving skills. Most of the valley stations are on a gradient and require lots of practice to get the stop right - especially in bad weather which this areas sees often. Some images of the line: Cardiff Central Station https://en.wikipedia.org/wiki/Cardi...ile:Cardiff_Central_station_(26526139271).jpg Cardiff Queen Street https://en.wikipedia.org/wiki/Cardi...edia/File:Cardiff_Queen_St._(19366639218).jpg Pontypridd Station https://c8.alamy.com/comp/f7yf4c/pontypridd-train-station-in-pontypridd-south-wales-f7yf4c.jpg Ystrad Rhondda Passing Loop Station http://s0.geograph.org.uk/geophotos/02/79/34/2793410_e64427bf.jpg Treherbert Station https://en.wikipedia.org/wiki/Trehe...erbert_railway_station_(geograph_5521727).jpg Aberdare Station https://en.wikipedia.org/wiki/Aberd...erdare_railway_station_(geograph_5510248).jpg Merthyr Tydfil Station https://en.wikipedia.org/wiki/Merth...tation,_Merthyr_Tydfil_(geograph_4049515).jpg EDIT: I forgot to mention one last detail. All Transport for Wales trains that operate in the valleys are serviced in Canton Depot which is to west of Cardiff Central station and would allow the player to start morning services and end evening services in the depot. I have attached an image below from Google Maps of what Canton Depot looks like and as you see Cardiff Central Station in the distance. Some services however will end in the head of the valley. For example, the last Treherbert service is then kept overnight at Treherbert station or sidings to form the first 6am service down to Penarth via Cardiff Central. https://www.google.co.uk/maps/place...e64707265679909!8m2!3d51.4749764!4d-3.1948779 EDIT 2: Last edit I promise. I forgot to mention route length (what is a pretty important factor at the moment it seems). Cardiff Central to Merthyr Tydfil is 20 miles with it taking an average time of 1hour 3 minutes to complete the journey. https://www.thetrainline.com/train-times/cardiff-central-to-merthyr-tydfil Pontypridd to Treherbert is 10 miles with it taking an average time of 37 minutes to complete the journey. https://www.thetrainline.com/train-times/pontypridd-to-treherbert Abercynon to Aberdare is 7 miles with it taking an average time of 26 minutes to complete the journey. https://www.thetrainline.com/train-times/abercynon-to-aberdare This would mean a total distance of 37 miles in one DLC which with two trains the 142 and 150/2 doesn't seem too terrible. Thank you for taking the time to read my suggestion!