Queue length, often reported in terms of 95thpercentile or as a queue-to-storage ratio, is typically expressed as feet but can also be reported as the number of vehicles queued. Per the HCM, queue length is defined as “the distance between the upstream and downstream ends of the queue.” A queue length in the 95th percentile indicates the length which has a five percent probability of being exceeded during a given analysis period. Queue-to-storage ratio is a numeric value equaling the ratio of 95th-percentile queue length to the storage length of the corresponding movement. Queue-to-storage ratios greater than one indicate incomplete storage.