CTA performance

Bus Bunching Tracker

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9 · Ashland

Total headways: 45,843

Bunching rate

3.5%

Share of observed headways considered bunched

Excess wait (min)

+5.3 min

Extra wait vs. schedule (frequent service only)

Headway CV

0.71

Spacing irregularity — 0 is perfectly even

Median scheduled headway

9.60

Typical planned spacing between buses on this route

Median actual headway

13.53

Typical spacing between buses on this route

Segment ranking

Worst segments

SegmentBunching rateHeadways
From Ashland & Taylor
To Ashland & Roosevelt
8.1%272
From Ashland & Polk
To Ashland & Taylor
7.4%272
From Ashland & 18th Street
To Ashland & Cullerton
7.1%281
From Ashland & Harrison
To Ashland & Polk
7.0%272
From Ashland & 15th Street
To Ashland & 18th Street
6.8%279
From Ashland & Cullerton
To Ashland & Cermak/Blue Island
6.8%281
From Ashland & Erie
To Ashland & Chicago
6.8%296
From Ashland & Jackson
To Ashland & Harrison
6.6%271

Spatial view

Route segments

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

Trend by hour

Route 9 · bunching by hour

Peak risk: 2p (11.5%)
0%3%6%9%11%12a: 8.2%12a8.2%1a: 1.9%1a1.9%2a: 1.1%2a1.1%3a: 0.4%3a0.4%4a: 1.1%4a1.1%5a: 2.7%5a2.7%6a: 4.3%6a4.3%7a: 2.2%7a2.2%8a: 2.8%8a2.8%9a: 5.8%9a5.8%10a: 6.6%10a6.6%11a: 8.5%11a8.5%12p: 9.9%12p9.9%1p: 7.7%1p7.7%2p: 11.5%2p11.5%3p: 9.7%3p9.7%4p: 10.4%4p10.4%5p: 7.1%5p7.1%6p: 7.1%6p7.1%7p: 8.5%7p8.5%8p: 5.8%8p5.8%9p: 5.5%9p5.5%10p: 3.5%10p3.5%11p: 4.5%11p4.5%