District of Columbia Parking Violations Weekly Summary for 2009

Over 50 violation type combinations are aggregated by week and time of day for the second half of 2009. The District of Columbia's Vision Zero initiative provides this data, summarized into 26 distinct weekly street segments to reveal spatial and temporal patterns.

Use Cases

• Create weekly street segment heat maps using aggregated violation data to visualize spatial enforcement patterns.
• Analyze the frequency of specific violation types across the 26 weekly segments to identify recurring hotspots.
• Query data by week and time-of-day ranges to examine temporal trends in parking enforcement across Washington D.C.
• Compare violation category distributions from weeks 27 to 52 to assess seasonal changes in parking behavior.

Strengths

• Covers over 50 distinct combinations of parking violation types.
• Provides 26 weeks of aggregated data for the second half of 2009.
• Data is summarized by week, time-of-day ranges, and violation category for temporal analysis.

Limitations

• Records without an associated street segment or time of day were excluded, potentially introducing selection bias.
• Data is aggregated and summarized, limiting analysis to pre-defined weekly segments and time ranges instead of raw ticket-level details.
• Temporal coverage is limited to a 26-week period in a single year (2009).

Provenance

Source

District of Columbia's Vision Zero initiative, with violations issued by the Metropolitan Police Department and partner agencies.

Collection Method

Summarized from a database provided by the District Department of Motor Vehicles, aggregated by street segment, week, time of day, and violation category.

Time Range

Weeks 27 to 52 of 2009.

Freshness

Metadata was last updated in 2026, but the underlying data covers 2009.

Geography

District of Columbia (Washington D.C.), United States.