CTA performance

Bus Bunching Tracker

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55 · Garfield

Total headways: 12,752

Bunching rate

0.6%

Share of observed headways considered bunched

Excess wait (min)

+16.7 min

Extra wait vs. schedule (frequent service only)

Headway CV

0.80

Spacing irregularity — 0 is perfectly even

Median scheduled headway

8.74

Typical planned spacing between buses on this route

Median actual headway

26.55

Typical spacing between buses on this route

Segment ranking

Worst segments

SegmentBunching rateHeadways
From 55th Street & Kimbark
To 55th Street & Kenwood
2.7%149
From 55th Street & Rockwell
To 55th Street & Artesian
2.1%95
From 55th Street & Kenwood
To 55th Street & Dorchester
1.8%56
From Garfield & Morgan
To Garfield & Peoria
1.7%120
From Garfield & Halsted
To Garfield & Union
1.7%120
From Garfield & Peoria
To Garfield & Halsted
1.7%121
From Garfield & Union
To Garfield & Lowe
1.7%121
From Garfield & Lowe
To Garfield & Normal
1.6%124

Spatial view

Route segments

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

Trend by hour

Route 55 · bunching by hour

Peak risk: 7p (10.3%)
0%3%5%8%10%12a: 0.0%12a0.0%1a: 0.0%1a0.0%2a: 0.0%2a0.0%3a: 0.0%3a0.0%4a: 0.0%4a0.0%5a: 0.4%5a0.4%6a: 1.4%6a1.4%7a: 0.8%7a0.8%8a: 0.1%8a0.1%9a: 0.7%9a0.7%10a: 1.4%10a1.4%11a: 2.7%11a2.7%12p: 6.2%12p6.2%1p: 7.8%1p7.8%2p: 5.6%2p5.6%3p: 5.5%3p5.5%4p: 5.9%4p5.9%5p: 8.0%5p8.0%6p: 9.9%6p9.9%7p: 10.3%7p10.3%8p: 7.2%8p7.2%9p: 2.1%9p2.1%10p: 0.8%10p0.8%11p: 1.4%11p1.4%