Station Interior Impression Change Example - Placement Type

Legacy Methodology

 

Placement Exposure Update

For inventory inside transit stations, traffic is reduced to circulation by considering field of view with each frame’s placement type. Placement type is the area within a transit station where the frame is located and can be, for example, entrance/exit, concourse, or platform. A concourse is the large open area inside or in front of a transit station, and a platform is an area alongside a railway track providing convenient access to trains.

For each placement type, a variety of sizing metrics are used to determine a “discounting factor” called placement exposure. The following table gives examples of placement exposure factors for various combinations of placement types and sizing metrics.

Placement Type

Count within Station

Placement Exposure

entrance/exit

1

1.00

entrance/exit

2

0.50

entrance/exit

3

0.33

concourse

1

1.00

concourse

2

0.50

concourse

3

0.33

platform

1

0.67

platform

2

0.50

platform

3

0.44

 

Geopath Preliminary CTA Station 2-Sheet Impressions

Platform vs. Concourse Placement Types

Place Name

Placement Type

 Total Impressions 

35-Bronzeville-IIT Station

Concourse

                           10,788

35-Bronzeville-IIT Station

Platform

                             5,845

95th Station

Concourse

                           74,696

95th Station

Platform

                           40,471

Adams/Wabash Station

Concourse

                           73,045

Adams/Wabash Station

Platform

                           29,682

Addison-Red Station

Concourse

                        200,323

Addison-Red Station

Platform

                        108,536

Argyle Station

Concourse

                           20,589

Argyle Station

Platform

                           11,155

Ashland-Lake Station

Concourse

                           16,465

Ashland-Lake Station

Platform

                             6,691

Belmont Station

Concourse

                        192,910

Belmont Station

Platform

                        104,520

Berwyn Station

Concourse

                           61,141

Berwyn Station

Platform

                           33,127

Cermak-Chinatown Station

Concourse

                           24,428

Cermak-Chinatown Station

Platform

                           13,235

Chicago-Red Station

Concourse

                        148,275

Chicago-Red Station

Platform

                           60,252

Clark/ Lake Station

Concourse

                        203,721

Clark/ Lake Station

Platform

                           45,991

Diversey Station

Concourse

                           66,206

Diversey Station

Platform

                           26,903

Fullerton Station

Concourse

                           93,447

Fullerton Station

Platform

                           75,945

Garfield-Green Station

Concourse

                             5,043

Garfield-Green Station

Platform

                             2,049

Granville Station

Concourse

                           25,056

Granville Station

Platform

                           27,151

Howard Station

Concourse

                           17,846

Jackson-Blue Station

Concourse

                           68,154

Jackson-Blue Station

Platform

                           36,926

Jarvis Station

Concourse

                           16,717

Jarvis Station

Platform

                             9,057

Jefferson Park Transit Center Station

Concourse

                           39,646

Jefferson Park Transit Center Station

Platform

                           14,320

Kimball Station

Concourse

                           18,295

Kimball Station

Platform

                           14,869

Midway Station

Concourse

                           68,095

Midway Station

Platform

                           27,671

Morse Station

Concourse

                           73,576

Morse Station

Platform

                           39,864

Polk Station

Concourse

                           14,849

Polk Station

Platform

                             6,034

Rosemont Station

Concourse

                           48,082

Rosemont Station

Platform

                           26,051

Southport Station

Concourse

                           20,501

Southport Station

Platform

                             8,331

Thorndale Station

Concourse

                           41,749

Thorndale Station

Platform

                           22,620

Washington/Wells Station

Concourse

                        114,112

Washington/Wells Station

Platform

                           46,370

Wellington Station

Concourse

                           48,204

Wellington Station

Platform

                           19,588

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