12504-12503 agartala - bangalore cantonment humsafar exp. is always late by 20 hours 25 hours 30 hours and more. 8th may agartala starting and 11th may bangalore cant. train has been cancelled due to abnormal late running . Until NFR gets additional similar type humsafar rakes, In future also it would continously run late . Now similar costlier 3rd ac humsafar coaches are in high demand. Even it reaches destination 5 to 10 hours delay it requires additional longer mandatory maintenance hours at its coaching depots. longer the journey longer the maintenace time. Past travellers were disappinted a lot due to abnormal waiting time at stations. Even trains change over crew were highly disturbed due to late running. If anybody wants to reach their destination in time or minor delay avoid booking in this train until it gets additional similar 3rd ac humsafar rakes,