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Accidents trends on different time scales
What time do most of the accidents occur ?
The rush hours from Monday to Friday !
Zip codes with High Traffic Accidents from 2017 - 2020
Zip codes with High Traffic Accidents from 2017 - 2020
Analysis of Pareto Rule for San Diego Traffic Accidents
Analysis of Pareto Rule for San Diego Traffic Accidents
Pareto char shows that 80% of the total San Diego traffic accidents happened in only 16 zip codes(42%) between 2017 to 2020.
From the chart we can see 92108 is the most occurring issue for the car accidents in San Diego.
Trend of Car Accidents in San Diego by Zipcodes
Trend of Car Accidents in San Diego by Zipcodes
This figure reveals that car accidents in areas close to downtown, especially in the area of 92108 tend to increase from 2017 to 2020 in San Diego city.
The Distribution of Car Accidents of Weekday/Hour in 92108 Area
From the table shown above, we could find that most car accidents in 92108 happen between 3 pm and 6 pm on weekdays.
San Diego Car Accidents per Severity for Different Zip codes
San Diego Car Accidents per Severity for Different Zip codes
The severity of the accident, is a scale of 1 to 4, where 1 indicates the least impact on traffic (like short delay), and 4 indicates a significant impact on traffic (like long delay).
Is there a change in severity levels from 2017 to 2020 ?
It is seen that Severity 4 accidents have been closely in the same range over the years. However, Severity 2 has been increasing drastically by years. At the same time Severity 3 level accidents are descreasing. This indicates that measures taken in last four years proving effective in reducing the Severity 3 accidents into Severity 2.
Heat Maps of Car Accidents in San Diego City (2017-2020)
Overall
Overall
This figure shows that most of the car accidents happened in intersections of freeways in San Diego city during 2017-2020.
Severity 2
Severity 2
Severity 3
Severity 3
Severity 4
Severity 4
These diagrams reflect the distributions of severity 2, 3 and 4 of car accidents in San Diego city. We could find that the car accidents of severity 4 are prone to happen at the intersection of Interstate 8 and California State Route 163.
Daytime
Daytime
Night
Night
These figures indicate the distributions of car accidents in San Diego city during daytime (after sunrise) or night (after sunset). We could find that the patterns are very similar between the two conditions. Furthermore, car accidents are more likely to occur near the Fashion Valley at night than during the daytime.
Car Accidents in San Diego City by Different Streets (2017-2020)
Car Accidents in San Diego City by Different Streets (2017-2020)
*The route maps are retrieved from http://www.i5sandiego.com/index.html
This figure reveals that the Interstate 5 Northbound and the Interstate 805 Southbound are prone to car accidents in San Diego city from 2017 to 2020. Respectively account for 12.4% and 9.4% of the total.
Car Accidents in San Diego City by Top 10 Weather Conditions (2017-2020)
From the chart, we can see the weather conditions of fair and mostly cloudy are more prone to car accidents in San Diego city.
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