To measure the variability in end-to-end travel time, a ratio of average peak-hour travel time to the average non-peak-hour travel time was compared across BRT systems. An increase in this ratio usually comes from the effect of peak-hour traffic (2). A single end-to-end trip can be reduced to dwell time and running time. Both components of travel time can contribute to an increase in the variability of the travel time ratio.Understanding which features reduce or increase the variability of travel time is important not only in the design stages of a BRT system but also later during operation. These features may affect the riders' perception of the system's reliability and the length of time spent on the bus. When a BRT system is designed, an increase in the variability of travel time can result in the need to purchase additional buses to cover the longer end-to-end travel time, whereas the reduction in travel time could result in the opportunity to offer an additional trip. An additional benefit to lower travel time in general (as well as improved travel time variability) is the potential increase in ridership as a result of the increased reliability and, therefore, increased revenue (2).