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Table 10. Example reporting of Airport APM Performance Measure #1:
Service Availability (Tier C Approach).
February 10, 2010
Day Month-to-Date Year-to-Date
Service Availability
99.27% 98.77% 99.75%
(Tier C Approach)
Service mode
98.65% 99.74% 99.33%
availability
Fleet
98.55% 97.44% 98.65%
availability
Station platform door
98.44% 99.77% 99.67%
availability
Downtime, by Availability and Category, for February 10, 2010
(in seconds)
Day Month-to-Date Year-to-Date
Mode Fleet Door Mode Fleet Door Mode Fleet Door
Weather 300 -- -- 400 -- -- 600 -- --
Passenger -- 1,100 -- -- -- -- 2,000 1,100 --
System equipment -- -- 2,000 -- -- -- -- -- --
Facilities -- -- -- -- -- -- -- -- --
Utility -- -- -- 5,000 -- -- 5,000 -- --
O&M -- -- -- -- -- 500 -- -- 500
Other -- -- -- -- -- -- -- -- --
February 10, 2010, and the associated assignment of down- tions or maintenance purposes does not constitute an
time are provided in Table 10, which represents a more com- evacuation.
prehensive level of reporting for this measure. The minimum A mainline derailment. Mainline is defined as the APM
data to be reported for this measure would be as found on guideway in the passenger-carrying portion of the system
Form B in Exhibit A. but not including mainline pocket tracks and storage and
turnback/switchback tracks beyond terminals where
5.3.4Airport APM Performance Measure #2: passengers are prohibited.
Safety Incidents per 1,000 Vehicle Any incident involving damage to APM system property
Service Miles wherein safety was compromised during the incident or
the damage compromises safety going forward. APM
5.3.4.1Definition system property is defined as any APM system equip-
Safety Incidents per 1,000 Vehicle Service Miles is the rate ment within the APM system or any APM facilities and
at which safety incidents have occurred in the airport APM related facilities equipment within the system, such as
system. It is defined as: the guideway, traction power substations, APM stations,
station escalators and elevators, other APM equipment
Monthly SI1kvsm =
(( m
d=1 )
SI × 1, 000 ) rooms, and the M&SF.
Any verified incident involving any person on APM
d=1 VSM
m
system property (e.g., on a train, in an APM equipment
room, in an APM station, on the guideway, at the M&SF,
Yearly SI1kvsm =
(( y
d=1 )
SI × 1, 000 ) along the right-of-way) that resulted in injury or could
d=1 VSM have resulted in injury. Injury is defined as an incident
y
that requires any medical attention, including first aid
Where: treatment.
Application of the emergency brake(s) on a moving
·SI1kvsm = Safety Incidents per 1,000 Vehicle Service Miles. in-service train in the passenger-carrying portion of the
·SI = Number of safety incidents. system, but not including mainline pocket tracks and
· Safety incident is an unintentional event defined as: storage and turnback/switchback tracks beyond terminals
The evacuation of passengers from a train, APM station, where passengers are prohibited.
or other public or non-public area of the APM system, The fatality of any person on APM system property
regardless of whether the evacuation was attended or (e.g., on a train, in an APM equipment room, in an
directed by system or life safety personnel. The removal APM station, on the guideway, at the M&SF, along the
of passengers from trains or stations for routine opera- right-of-way).
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·VSM = Vehicle service miles. Vehicle service miles is defined · Facilities-induced. Safety incidents caused by the facilities,
as the total miles traveled by all in-service vehicles in the such as a station roof leaking water onto the floor imme
system, with a vehicle being in service when located in the diately in front of the station sliding platform doors.
passenger-carrying portion of the system and when pas- · Utility-induced. Safety incidents caused by a utility service
sengers are able to use it for transport (see Section 5.2.2 for provider, such as the loss of one or more incoming electrical
further clarification). feeds to the APM system.
·d = Day of the month or year, as applicable. · O&M-induced. Safety incidents caused by personnel affili-
·m = Days in the month. ated with the operations and/or maintenance organization,
·y = Days in the year. such as the mis-operation of the system from the control
center or the failure of a maintenance technician to prop-
Safety incidents should not be double counted. For example, erly isolate a piece of equipment from the active system
if all trains are evacuated as a result of a total loss of incoming operation on which he or she is working.
power from the utility service provider, this would be recorded · Other. Safety incidents caused as a result of other reasons.
as one safety incident, as opposed to one safety incident per
train evacuation. 5.3.4.2 Data Requirements and Sources
When more than one of the events that define a safety
incident (as described previously) occur during the same The data and sources required to calculate Safety Incidents
incident, the order of precedence in classifying the safety per 1,000 Vehicle Service Miles are provided in Table 11.
incident is as follows: (1) fatality, (2) injury, (3) evacuation,
(4) mainline derailment, and (5) property damage. For exam- 5.3.4.3Data Collection Techniques and Calculating
ple, a mainline train derails and as a result three passengers and Recording the Measure
are transported to the hospital for treatment of their injuries.
This is defined as a safety incident because of the mainline It is recommended that the collection of data for the Safety
derailment, because of the injuries involved, and possibly Incidents per 1,000 Vehicle Service Miles performance measure
because of property damage. In this case, one safety incident be accomplished daily but be reported no more frequently than
would be recorded as a result of the injury event. monthly since safety incidents in airport APM systems are
In addition to all safety incidents being classified according relatively rare. In addition, the numeric value of the measure,
to the event by which they are defined, safety incidents are if reported daily, could be misinterpreted to be high because
also to be assigned to one of the following predefined causal the underlying basis is only 1 day's worth of vehicle service
categories: miles, as opposed to 30 days' worth of vehicle service miles in
a monthly reported measure.
· Weather-induced. Safety incidents caused by the weather, For this measure, most of the data will typically be collected
such as lightning striking the guideway, or a snow or ice from records and systems in the control center. Where the
storm. functionality of the CCCS and the specificity of the APM
· Passenger-induced. Safety incidents caused by a passenger, system output data allow, it may be possible to collect data for
such as a passenger pulling an emergency evacuation handle the Safety Incidents per 1,000 Vehicle Service Miles performance
on an in-service train. measure directly from the CCCS. After the one-time setup of
· System equipment-induced. Safety incidents caused by sys- the performance measure in the CCCS, all that may be needed
tem equipment, such as a broken axle on an in-service train. thereafter are the incidental updates of classifying incidents
Table 11. Data requirements and sources, Airport APM Performance
Measure #2: Safety Incidents per 1,000 Vehicle Service Miles.
Data
Requirement Source
Control center logbooks
Number of safety incidents and Incident reports
1 the event classifications by Work orders
which they are defined Reports and/or records of life-safety agencies
2 Vehicle service miles ATS, CCCS
Vehicle maintenance records
Control center logbooks
3 Cause of safety incidents Incident reports
Work orders
