Guidebook for Measuring, Assessing, and Improving Performance of Demand-Response Transportation (2008) / Chapter Skim
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Pages 10-29
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To help improve consistency in data definitions and reporting for DRT, this chapter addresses performance data, definitions, and data collection practices and procedures. Practices that lead to inconsistencies are also outlined.
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Performance Data and Definitions 11 Revenue Hours Revenue hours include all time from the point of the first passenger pick-up to the last passenger drop-off, as long as the DRT operator and vehicle do not return to the dispatching point (e.g., the garage or some other location such as a satellite location or the operator's home) having completed the operator's work assignment.
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FTA also makes the reported NTD data available to the public. Since 1997, FTA has posted these data on the Internet at the NTD program site.
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of the bus route and back again. It includes the small amounts of time scheduled as layover/ recovery time, typically at both ends of the route.
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If volunteers are used to provide DRT service, their time is counted as revenue time, using the same definition, that is, the time from the point of the first passenger pick-up to the last passenger drop-off, exclusive of any scheduled time off. If a volunteer driver accompanies the passenger to an appointment, for example a medical appointment, as part of the trip, the time spent at the medical appointment is counted in the same way as scheduled time off; it is not counted as revenue time.
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Data Collection: Revenue mile data are obtained from driver logs or MDTs, which should be configured so that vehicle operators record the actual odometer readings when they go into and out of revenue service. For volunteer services, reporting forms should be developed that will capture revenue miles.
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capture the vehicle hour time. For non-dedicated service such as taxi services, arrangements with the taxi company will need to include requirements that vehicle operators report pick-up and drop-off times, if such data are not routinely collected.
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most frequently for contracted taxi service where the contract does not require the taxi company to record and report these data. • Incorrect treatment of lunches and breaks.
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location. For volunteer services, reporting forms should be developed that will capture passenger counts.
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at each pick-up location, if such data are not routinely collected, along with trip distances. These data would then be included on the taxi company invoice to the DRT system.
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contract for service allow their contractor to obtain fuel from the city or county yard; the costs for the fuel should be included as part of operating costs. If the transit system purchases transit services, it needs to ensure that the contractors provide cost data that are separated into operating and capital costs.
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Another important element is the requirement that an injury involves immediate medical attention away from the accident scene. This means that injured people who receive treatment at the accident scene are not counted toward the definition of an accident.
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the vehicle arrives at the scheduled destination within the DRT system's definition of on-time for drop-offs. Most DRT systems monitor on-time at the pick-up end, however some monitor on-time at the drop-off end as well.
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picked up. Other systems may exclude no-shows as no passenger service was provided; on-time performance is calculated then only for completed trips.
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its on-time performance went from a reported 91% with manual reporting to 68% once MDT/AVL technology was installed that provided more accurate data. While this might be an extreme case, differences of more than 5 to 10 percentage points for on-time performance are not uncommon once a DRT system transitions from manual reporting to MDTs/AVL.
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Discussion of Definition: Scheduled trips are those placed onto vehicle schedules as well as any excess that may remain "unscheduled" the day before service. Scheduled trips are the subset of reserved trips that remain when the reservation window closes, that is, scheduled trips will be the number of reserved trips minus the number of trips cancelled in advance.
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Same-Day Cancellation Definition: A same-day cancellation is a cancellation made on the day the trip is scheduled to occur. Same-day cancellations include trips cancelled early in the day, possibly hours before their scheduled time, as well as trips cancelled with less notice.
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Missed-Trip Definition: A missed trip is defined as a failure of the vehicle to show up for a scheduled trip. A missed trip can also be defined to include a trip that arrives late, and because of that lateness, the passenger is no longer there for the trip or declines to take the trip.
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Trip Length Definition: Trip length is the distance measured in miles, from the passenger pick-up to the drop-off location. The sum of all passengers' trip lengths is an NTD data element -- passenger miles -- and must be included with DRT systems' annual NTD reports.
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and providing specific information to a specific staff member on the incident as well as providing personal information such as name, address, and phone number and other contact information. In these cases, passengers may not follow through with a legitimate complaint because of the effort required.
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