§ 71.01 – What service-consumed data must I estimate without 100% UPT?

(a)    You must estimate both UPT and PMT.

(b)   The following table shows the data items you must estimate.

Table 71.01.  Service-Consumed Data Items without 100% UPT

If your mode is

you must estimate

demand response – taxi (DT)

·  annual total UPT and PMT

commuter rail (CR), heavy rail (HR), or light rail (CR)

·  annual total UPT and PMT

·  average daily UPT and PMT by type of service days

·  annual total UPT by weekday time period

any other mode

·  annual total UPT and PMT

·  average daily UPT and PMT by type of service days

§ 71.03 – What do I need to do in general to get estimates of these data items?

(a)    You must determine sample averages.

(b)   You must determine expansion factors.

(c)    You must combine the expansion factors and sample averages to get the corresponding estimates of service-consumed data.

§ 71.05 – What is a sample average?

(a)    A sample average is the sample total divided by the number of service units in the sample. 

(b)   It may be calculated for the entire annual sample, by the type of service day, or for specific weekday time periods. 

(c)    Sample averages are used to estimate service-consumed data when your sampling plan is based on the base option.

§ 71.07 – What is an expansion factor?

(a)    A measure of actual services operated during a given duration of time. 

(b)   It is used to convert sample averages to totals in the given duration.  The total number of one-way bus trips operated during an entire report year is an example of an expansion factor in actual services operated; when multiplied by sample average PMT per one-way bus trip, it yields a measure of annual total PMT.

§ 71.09 – How is the guidance organized?

(a)    The guidance is separate in three subsections for three modal groups to reduce confusion over the different units of sampling and measurement that are typically used for these three modal groups:

(1)   Non-scheduled services, including demand response (DR and DT), vanpool (VP), jitney (JT), or público (PB) (Subsection 73).

(2)   Rail services, including heavy rail (HR), commuter rail (CR), light rail (LR), monorail and automated guideway (MG) (Subsection 75).

(3)   Bus services, including bus (MB), commuter bus (CB), bus rapid transit (RB), or trolley bus (TB) (Subsection 77).

(b)   Subsection 79 contains the guidance on combining expansion factors and sample averages to get estimates of service-consumed data.