Accuracy

UTA’s Automatic Passenger Counting Systems has been evaluated in over twenty large urban transit systems and has been found to consistently generate Passenger Counting Accuracies in the 97%-99% range.

Other APC systems have consistently been found to generate Passenger Counting Accuracies in the 85% - 92% range.

 

 

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San Francisco Municipal Transportation Agency (MUNI)           Date: 2007

Manual Route Ridership (NTD)
APC-Generated Route Ridership
306,978
308,760
Concurrence: 100.6%

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Massachusetts Bay Transportation Authority (MBTA)                Date: 2007

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
104%
N/A
Deboardings
105%
N/A


Note: Checker did not include operator and checker boardings/deboardings
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Niagara Frontier New York City Transit Authority (NFTA)            Date: 2006

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
96%
Deboardings
99%
98%

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Rochester-Genesee Regional NYC Transit Authority (RGRTA)    Date: 2006

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
101%
96%
Deboardings
101%
97%

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Hillsborough Area Regional Transit Authority (HARTline)        Date: 2005

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
95%
Deboardings
101%
95%

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Alameda-Contra Costa Transit District (AC Transit)                    Date: 2005

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
98%
95%
Deboardings
98%
95%

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Southwestern Ohio New York City Transit Authority (SORTA)      Date: 2005

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
95%
Deboardings
99%
95%

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Central Ohio Transit Authority (COTA)                               Date: 2005

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
95%
95%
Deboardings
95%
95%

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Los Angeles County Metropolitan  (LACMTA)                            Date: 2002

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
88%
Deboardings
99%
92%


Note: Tests conducted on Wilshire Blvd Rapid Bus line 720- High Passenger Volumes.
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Capital Metropolitan (CMTA)                                             Date: 2002

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
98%
95%
Deboardings
95%
95%


Note: Approximately 1000 observations on Flxible Buses.
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Omnitrans (San Bernardino)                                          Date: 2001  

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99.5%
97.1%
Deboardings
99.5%
97.1%


Note: Approximately 4000 observations on TMC and Gillig Buses
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Southeastern Pennsylvania Transportation (SEPTA)                 Date: 2001 

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
96%
Deboardings
102%
93%

                                                                                                 
Note: Neoplan and NABI Buses - Driver and checker not included in manual counts.
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British Columbia Transit (BC Transit)                                   Date: 2000

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
102%
97%
Deboardings
103%
96%


Note: Dual-stream rear doors - Driver and checker not included in manual counts.
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Dallas Area Rapid Transit (DART)                                            Date: 1998

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
92%
Deboardings
99%
94%


Note: Standard 40' Two (2) Door Buses.
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Alameda-Contra Costa Transit District (AC Transit)                      Date: 1997

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
95%
Deboardings
98%
98%


Note: Articulated buses included in accuracy evaluation.
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Metropolitan Atlanta Rapid Transit Authority (MARTA)               Date: 1997

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
97%
96%
Deboardings
97%
96%

                                                                                                
New Flyer Low Floor Buses
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Minneapolis Metropolitan Transit Commission                             Date: 1994

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
97%
98%
Deboardings
98%
98%

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New Jersey Transit                                                                           Date: 1994

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99%
98%
Deboardings
99%
97%


Note: Results reflect standard two (2) door 40' bus configuration.
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Port Authority of Allegheny County                                       Date: 1993

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
95%
97%
Deboardings
99%
97%


Note: Test consisted of 8,000 observed boardings and Deboardings.
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Pace Suburban Bus Service                                            Date: 1987-1988

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
98.5%
96.1%
Deboardings
98.4%
96.8%


Note: Test Consisted of Twenty (20) APC Buses.

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Washington Metropolitan Area Transit Authority (WMATA)      Date: 1986

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99.7%
95.1%
Deboardings
98.4%
95.5%


Note: Most Comprehensive APC Test Ever Conducted (17,000 Boardings and Deboardings)
_____________________________________________________________

Metropolitan Atlanta Rapid Transit Authority (MARTA)                  Date: 1986

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
98.1%
93.4%
Deboardings
98.7%
96.7%

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Grand Rapids Area Transit Authority (GRATA)                          Date: 1985

.
Overall Concurrence
Manual-APC Deviation Range +/- 1
Boardings
99.5%
97%
Deboardings
99.8%
95%

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Denver Regional Transit                                                    Date: 1984-1985

Results:  Daily on and offs to within plus or minus 5% of manual counts.  Individual trip on and offs to within plus or minus 10% of manual counts Bus stop on and offs accurate 85-90% of the time

Considering that the performance of trained checkers is within these accuracy levels, it can be concluded that the APC units of either supplier are nearly as accurate as checkers in general, and are more accurate than checkers if the APC units are used to do repetitive counting.
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Central Ohio Transit Authority (COTA)                           Date: 1984

Results:  "Extensive testing of APC equipment at COTA has determined that the Automatic Passenger Counting Systems counts passengers very accurately.  APC's approximate the accuracy of two (2) human surveyors on routes with light passenger activity.  Testing also showed APC's surpassing the accuracy in terms of boarding-alighting discrep­ancy of a pair of surveyors on a route with heavy passenger activity."
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Chicago Transit Authority (CTA)                           Date: 1984

Results:  "From testing performed by CTA Operations Planning staff the accuracy of the APC passenger counting subsystem was in the 95 +/-3% accuracy range.  The accuracy of APC's is at least as accurate as the manually collected data at CTA."
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U.S. DOT New York City Transit Systems Center                        Date: 1982

Results: "APC's accuracy is comparable to the accuracy obtained through on board ride checkers."
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