This is because Raipur does not have a coach care centre . cOACH care centres are there in Durg and Bilaspur. There was some news which talked about building of a Coach care centre . oTHER Solid reason is if it starts from Raipur it will either Have to dich Durg or Bilaspur . These three cities are populated and have a very good no of pax which travel in this Rajdhani . Hope that your quiry is now answered ! :)