The Line isnt that realistic, i have been on these before and the scenery round the route isnt correct, but they did get Central Croydon Correct, but the worst part was the curve before Reeves Corner, where there is a road (Cairo New Road) missing. The Route Numbers are not in use now, and Route 3 Now runs from New Addington to West Croydon. The Tram sounds dont sound perfect, but they are ok. Btw you ran a red light in Central Croydon, and Trams do stick to the Traffic System.
Because there is also supposed to be a route from Lloyd Park and Addiscombe to West Croydon instead of only 1 route to Mitcham Common. Also, the devs don't want to extend the map... So the tram route is limited