TAMPA — A coalition of public and private groups that's working to reduce traffic deaths in Hillsborough County has targeted 20 of the worst stretches of roadway to begin its work.

The Vision Zero Action Plan released Tuesday is based on severe crash data from 2012 to 2016. The plan ranks each stretch by severe crashes per mile of roadway.

These roads will be a focus for road-safety improvements through 2019:

1. Brandon Boulevard, from Falkenburg Road to Dover Road

Posted speed: 45-50 miles per hour.

Crashes per mile of roadway: 25 (180 total)

From the report: "This is a heavily-trafficked suburban corridor with many shopping plazas and driveways that create greater opportunity for crashes involving turning movements of drivers going to or leaving the destinations along the corridor."

2. Gibsonton Drive, Boyette Road, Interstate 75 to Balm Riverview Road

Posted speed: 45 mph

Crashes per mile of roadway: 21 (49 total)

From the report: "Crashes along Gibsonton Dr/Boyette Rd were more likely to involve left turns, motorcycles, and involve aggressive driving and/or speeding, or failure to yield as a cause."

3. Hillsborough Avenue, Longboat Boulevard to Florida Avenue

Posted speed: 45-55 mph

Crashes per mile of roadway: 19.8 (176 total)

4. Fletcher Avenue, Armenia Avenue to 50th Street

Posted speed: 35-50 mph

Crashes per mile of roadway: 19.6 (100 total)

From the report: "Wikimap users noted safety concerns about pedestrian behavior while crossing at the newly installed crosswalks as an issue."

5. Dale Mabry Highway, Hillsborough Avenue to Bearss Avenue

Posted speed: 45 mph

Crashes per mile of roadway: 18.8 (116 total)

From the report: "Wikimap users noted sidewalk gaps, limited safe bicycle facilities, and vehicle turning movements as issues on this corridor."

6. Lynn Turner Road, Gunn Highway to Ehrlich Road

Posted speed: 45 mph

Crashes per mile of roadway: 18.5 (28 total)

From the report: "Severe crashes along Lynn Turner Rd were more likely to occur during daylight hours; involve left turns; involve rear-end collisions; and involve either failure to yield or aggressive driving/speeding as causes."

7. Meridian Avenue, Channelside Drive to Twiggs Street

Posted speed: 35 mph

Crashes per mile of roadway: 18.3 (11 total)

8. Bruce B. Downs, Fowler Avenue to Bearss Avenue

Posted speed: 45 mph

Crashes per mile of roadway: 18.1 (32 total)

9. 50th Street and 56th Street, Martin Luther King Boulevard to Hillsborough Avenue

Posted speed: 45-50 mph

Crashes per mile of roadway: 17.7 (22 total)

10. 15th Street, Fowler Avenue to Fletcher Avenue

Posted speed: 30 mph

Crashes per mile of roadway: 17.6 (18 total)

11. Big Bend Road, U.S. 41 to I-75

Posted speed: 55 mph

Crashes per mile of roadway: 16.6 (51 total)

From the report: "Wikimap users noted the need for repaving and restriping the corridor."

12: U.S. 301, Interstate 75 to Adamo Drive

Posted speed: 50 mph

Crashes per mile of roadway: 16.2 (55 total)

13. Sheldon Road, Hillsborough Avenue to Waters Avenue

Posted speed: 45 mph

Crashes per mile of roadway: 16.2 (33 total)

14. Interstate 4, Interstate 275 to 22nd Street

Posted speed: 50 mph

Crashes per mile of roadway: 15.7 (17 total)

From the report: "The downtown interchange area is flagged on the statewide map of motorcycle crash hot spots."

15. 56th Street, Sligh Avenue to Busch Boulevard

Posted speed: 45 mph

Crashes per mile of roadway: 15.2 (23 total)

16. Interstate 275, Howard Frankland Bridge to Busch Boulevard

Posted speed: 50-55 mph

Crashes per mile of roadway: 15.1 (164 total)

17. Kennedy Boulevard, Dale Mabry Highway to Ashley Drive

Posted speed: 30-40 mph

Crashes per mile of roadway: 15.1 (43 total)

From the report: "Wikimap users noted the need for additional safe places for people walking to cross this corridor."

18. 78th Street, Causeway Boulevard to Palm River Road

Posted speed: 45 mph

Crashes per mile of roadway: 15.1 (19 total)

19. Mango Road, Martin Luther King Boulevard to U.S. 92

Posted speed: 45 mph

Crashes per mile of roadway: 15 (21 total)

20. Florida Avenue, Waters Avenue to Linebaugh Avenue

Posted speed: 45 mph

Crashes per mile of roadway: 14.9 (15 total)

Contact Langston Taylor @ltaylor@tampabay.com. Follow @langstonitaylor.