Rollover, T-bone and head-on hotspots in San Diego County

Most crashes in San Diego are minor. A small share are not, and they follow patterns you can see in the data. Rollovers, T-bones and wrong-way head-on wrecks make up a fraction of the region's collisions, yet they account for a large share of the deaths and the injuries that change a person's life. In 2023 the California Office of Traffic Safety counted 18,773 people killed or injured in traffic collisions across San Diego County, home to about 3.3 million residents.¹

Where those serious crashes happen is not random. The county's freeway ramps, its dense urban intersections and its winding back-country highways each tend to produce a different kind of violent crash. Here is where each type clusters, what the local agencies are doing about it, and what the numbers say.

Head-on wrecks and wrong-way drivers on the freeways

The most violent head-on crashes in San Diego happen on the freeways, when a driver enters a ramp going the wrong direction and meets oncoming traffic at highway speed. Wrong-way collisions are less than one percent of all highway crashes, but they rank among the deadliest, and the National Transportation Safety Board found that nearly half of them involve a drunk driver.²

Caltrans District 11, which runs the state highways across San Diego and Imperial counties, has spent years trying to design the danger out. The agency upgraded 74 on- and off-ramps across 13 routes, among them Interstate 5, Interstate 8, Interstate 15, State Route 163 and Interstate 805.² The countermeasures are deliberately simple: reverse-facing red reflectors that show red only to a driver headed the wrong way, oversized DO NOT ENTER and WRONG WAY signs, and one-way arrows painted on the ramp. In pilot testing those changes cut reported wrong-way events by 44 to 64 percent.² Even so, wrong-way crashes still kill an average of 37 people a year statewide, and California logged 248 of them on state highways in 2019.³ Caltrans has since put close to $9 million into wrong-way prevention.³

If a wrong-way driver hit you, the criminal DUI case and your civil injury claim move on separate tracks. The crash report's account of impairment matters to both.

Rollovers on the back-country highways

Rollovers are the crash type most tied to geography and speed. Nationally they are only about three percent of crashes but roughly a third of all passenger-vehicle occupant deaths, and taller vehicles such as SUVs, pickups and vans tip more easily because of their higher center of gravity.⁴ In San Diego the rollover problem lives east of the coast, on the rural two-lane highways.

State Route 67 is the clearest example. The highway drops to two lanes as it climbs from Lakeside toward Ramona, with blind curves and steep grades and no median between oncoming lanes. On July 19, 2025, a three-vehicle crash on SR-67 in Poway, between Poway Road and Scripps Poway Parkway, killed five people; one vehicle went off the road into a ravine and started a brush fire.⁵ Caltrans has an active SR-67 Improvements Project covering 16 miles between Mapleview Street in Lakeside and Highland Valley and Dye roads near Ramona, and its recent safety work adds centerline channelizers, upgraded barriers and changeable message signs aimed squarely at head-on and serious-injury crashes.⁶ Caltrans and SANDAG have committed roughly $37.5 million to the corridor.⁶

Speed and impairment are the common threads. Across the county in 2023, speeding was a factor in 4,133 fatal and injury collisions, and alcohol was involved in crashes that hurt or killed 2,827 people.¹ On a road with no shoulder and a drop-off waiting, either one can turn a single-car mistake into a fatal rollover.

T-bone crashes at the busy intersections

T-bone, or broadside, crashes happen where streets cross. A driver runs a red light or turns across traffic and strikes the side of another car, where the door offers far less protection than the front or rear of the vehicle. When the City of San Diego reviewed its severe and fatal bicyclist crashes from 2019 through 2023, broadside impacts were the single most common type of serious-injury collision, at about 41 percent.⁷ The geometry is no kinder to two cars.

The city has started naming its worst intersections. Using 2023 crash data, the Transportation Department flagged locations with five or more collisions and chose seven for near-term fixes: Art Street at El Cajon Boulevard, Kurtz Street at Rosecrans Street, Miramar Road at Nobel Drive, Briarwood Road at Paradise Valley Road, Pacific Highway at Taylor Street, El Cajon Boulevard from 63rd Street to Choctaw Drive, and Market Street between 26th and 27th streets.⁸ The planned work includes signal upgrades, added crosswalks, flashing beacons, pedestrian countdown timers and red curbs near corners under California's Assembly Bill 413 "daylighting" law, which keeps parked cars back from crosswalks so drivers and pedestrians can see each other.⁸

That effort sits inside San Diego's Vision Zero commitment, adopted in 2015, which sets a goal of ending traffic deaths on city streets. City data shows speeding was a contributing factor in one out of every six crashes between 2018 and 2022.⁹ El Cajon Boulevard keeps turning up in that review, which is why the boulevard alone carries two of the seven flagged locations.

If you were hit in one of these crashes

Rollovers, T-bones and wrong-way head-ons tend to cause the worst injuries, so a few practical steps matter more here than after a low-speed fender-bender. Get the report number before you leave the scene; on the freeways the responding agency is the California Highway Patrol, and on city streets it is the San Diego Police Department. Photograph the final rest positions of the vehicles and any skid marks or debris, because in a broadside or wrong-way case the point of impact and the direction of travel are what decide fault. See a doctor even if you feel fine, since side-impact and rollover injuries often surface a day or two later.

California generally gives you two years from the date of the crash to file a personal injury lawsuit.¹⁰ If a public agency's road design or maintenance is part of your claim, the deadline is much shorter: you usually have to present a written claim to that agency within six months.¹¹ If you want help sorting that out, you can find a local personal injury attorney through the thatcarhitme.com legal directory.

This article is general information, not legal advice.

Sources

1. California Office of Traffic Safety, "San Diego County 2023" collision rankings. https://www.ots.ca.gov/rankings/san-diego-county-2023/

2. California Department of Transportation (District 11), "Wrong-Way Driver Education and Prevention." https://dot.ca.gov/caltrans-near-me/district-11/popular-links/d11wwd

3. California Department of Transportation, Mile Marker, "District 11 looks to turn the corner on wrong-way crashes." https://dot.ca.gov/programs/public-affairs/mile-marker/2023-2/wrong-way

4. National Highway Traffic Safety Administration, "Rollover Research." https://www.nhtsa.gov/crashworthiness/rollover-research

5. NBC 7 San Diego, "Family remembers father, son killed in SR-67 rollover crash that killed five." https://www.nbcsandiego.com/news/local/family-remembers-father-son-killed-sr-67-rollover-crash-that-killed-five/3872490/

6. California Department of Transportation (District 11), "State Route 67 Highway Improvements Project." https://dot.ca.gov/caltrans-near-me/district-11/current-projects/sr67-corridor/improvements

7. City of San Diego, "Bicycle Master Plan Update Collision Analysis" memorandum (December 16, 2024). https://www.sandiego.gov/sites/default/files/2025-04/01b-bmpu_collision-analysis-memo_2024-12-16_0.pdf

8. City of San Diego (Inside San Diego), "Safety Improvements Identified for High Crash City Locations." https://www.insidesandiego.org/safety-improvements-identified-high-crash-city-locations

9. City of San Diego, "Vision Zero: Safe Streets for All San Diegans." https://www.sandiego.gov/vision-zero/safe-streets

10. California Code of Civil Procedure section 335.1 (two-year limit for injury or death claims). https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=CCP&sectionNum=335.1

11. California Government Code section 911.2 (six-month deadline to present a claim to a public entity). https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=GOV&sectionNum=911.2