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121 · Union/Streeterville Express

Total headways: —

Bunching rate

—

Share of observed headways considered bunched

Excess wait (min)

—

Extra wait vs. schedule (frequent service only)

Headway CV

—

Spacing irregularity — 0 is perfectly even

Median scheduled headway

—

Typical planned spacing between buses on this route

Median actual headway

—

Typical spacing between buses on this route

Segment ranking

Worst segments

SegmentBunching rateHeadways
From Adams & Canal
To Union Station Transit Center
——
From Wacker (Upper) & Adams
To Adams & Canal
——
From McClurg & Huron
To McClurg & Ontario
——
From McClurg & Ontario
To Grand & McClurg
——
From Grand & McClurg
To Grand & Fairbanks/Columbus
——
From Grand & Fairbanks/Columbus
To Michigan (Lower) & Illinois
——
From Michigan (Lower) & Illinois
To Wacker (Lower) & Michigan
——
From Wacker (Lower) & Michigan
To Wacker (Upper) & Adams
——

Spatial view

Route segments

AM peak
Low (<10%)
Medium (10% - 20%)
High (20%+)
No data

Trend by hour

Route 121 · bunching by hour

Peak risk: 5p (1.8%)
0%3%5%8%10%12a: no data12a1a: no data1a2a: no data2a3a: no data3a4a: no data4a5a: no data5a6a: no data6a7a: no data7a8a: no data8a9a: no data9a10a: no data10a11a: no data11a12p: no data12p1p: no data1p2p: 0.0%2p0.0%3p: 0.0%3p0.0%4p: 1.1%4p1.1%5p: 1.8%5p1.8%6p: 0.0%6p0.0%7p: no data7p8p: no data8p9p: no data9p10p: no data10p11p: no data11p