Roundup - #30DayChartChallenge 2025

The Morning Commute Drives the Weekday Surge in NYC Congestion Relief Zone Entries

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Theme Day 3 #circular

• NYC’s Congestion Pricing Program was rolled out in January 2025 to ease traffic in Manhattan and encourage greater use of public transit
• Morning traffic into Manhattan is significantly heavier on weekdays than weekends, while evening traffic remains similar across both
• Cars and taxis account for nearly 90% of vehicles on the roads during the weekday morning rush

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Small Passenger Vehicles Make Up 94% of All Entries into the Congestion Relief Zone

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Theme Day 4 #bigorsmall

• Taxis and for-hire (aka rideshare) vehicles accounted for a third of all vehicle traffic in Manhattan’s Congestion Relief Zone (CRZ)
• Unlike other vehicles—which are charged a base toll only once per day upon entering the CRZ—taxis and for-hire vehicles are charged for every trip into the zone
• In its first month, the program generated nearly $50 million in revenue and reduced traffic in 10%

Federal “IT Specialist” Roles Vary Widely Despite Similar Job Names

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Theme Day 13 #clusters

• Our analysis of federal "IT Specialist" job descriptions reveals many distinct clusters of roles based on the similarity of their responsibilities, despite having the same job title
• Clusters in AI & Data Science and Cybsersecurity & Risk Management show little overlap with other groups, suggesting a higher possibility of misalignment between job titles and actual duties

Red-Tailed Hawks Prey on Other Birds as Weather Warms

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Theme Day 17 #birds

• While the diet of the carnivorous red-tailed hawk is typically wide and varied, data shows that these birds engage in seasonal cannibalism and prey on other birds when the season grows warmer
• In colder months, red-tailed hawks stick to small non-hibernating mammals like mice, voles, and rabbits

Halley’s Comet to Reappear in 2062 After a 75-Year Cycle

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Theme Day 29 #extraterrestrial

• Halley’s Comet, the first recognized “periodic comet”, has been observed crossing Earth’s skies roughly every 75-80 years since at least 240 BC
• The comet is named after English astronomer Edmond Halley, who correctly computed its periodic orbits in 1705
• After last appearing in 1986, the comet is set to return in 2062