During the busiest times of the day, or the "peaks", 43 trains should be available in service. This will be an increase of 6 trains over the 37 units of 1967 tube stock. The trains have seats for 252 people and standing space for an estimated 1196 passengers. This gives a 19% increase in capacity. The new trains also have wider doors for easier boarding and alighting (to descend or step down) of passengers to decrease the times that the trains have to wait at stations.