What were the prisoners conditions during the long trip from gleiwist to buchenwald in the book Night

During trips from one concentration camp to another or from a city to a concentration camp such as this trip from the book "Night" consisted of large numbers of people being piled into a railway car like animals. Individuals were forced into railway cars in large numbers and forced to ride in difficult conditions without bathroom facilities, food, or water and exposure to the weather conditions outside of the cars.