A driver suspected of driving under the influence crashed into a Washington State Patrol trooper's car on Interstate 5 near Des Moines on Sunday, November 1, sending three people to hospital and leaving a passenger in the suspect's vehicle seriously injured, according to Seattle-area reporting published on Monday. The driver was arrested after the crash, KIRO 7 reported. The collision is the latest in a year in which, by the State Patrol's own count, 64 of its patrol units were struck in the first nine months of 2026 and 19 troopers were injured — figures the agency and the state transportation department were already publicising this week for Crash Responder Safety Week, which runs November 2 to 6. The DUI allegation is an allegation: the driver, who has not been named in the reporting so far, is presumed innocent unless proven guilty.
Source: The Seattle Times, via Seattle Courant summary, Nov 2, 2026
What is established at this stage is narrow, and this report keeps it that way. The Seattle Times reported that a man suspected of DUI struck a trooper's car on I-5 near Des Moines, in King County south of Seattle, and that three people were hospitalised as a result. KOMO News reported the same crash from the injury side: a suspected DUI driver crashed into a Washington State Patrol trooper's patrol car on I-5, leaving a passenger seriously injured. KIRO 7's headline on the incident records the enforcement outcome — a driver arrested after crashing into a Washington State Patrol vehicle on I-5. None of the reporting published by Monday morning named the driver, the trooper or the passenger, gave a milepost or direction of travel, or stated the trooper's individual condition beyond the count of three people taken to hospital.
Source: KOMO News, via Seattle Courant summary, Nov 2, 2026
A pattern, not a one-off: 64 patrol cars struck this year
The Des Moines crash landed in the middle of a safety campaign built around exactly this risk. In a joint release ahead of Crash Responder Safety Week, the Washington State Department of Transportation (WSDOT) and the Washington State Patrol (WSP) said that between January and September 2026, troopers contacted 9,200 drivers for DUI, 32,400 for distracted driving and 93,400 for aggressive driving — and that in the same nine months, 64 WSP patrol units were struck while conducting traffic enforcement or collision investigations, injuring 19 troopers. On average, between vehicle damage and regular wear, WSP must replace one patrol unit with a new model every business day of the year. WSDOT's Incident Response Team, whose trucks work the same shoulders, saw calls for service rise about 40 percent between 2024 and 2025, from 43,800 incidents to 61,400.
"It doesn't become a matter of if you're going to be hit, it's when," said Northwest Region IRT Supervisor Dennis Smith in the same release, adding that it is not uncommon for one of the team's drivers to be struck four, five or six times during a career. That is the working reality behind Sunday's crash: the shoulder of I-5 is a workplace, and the people standing and sitting in stopped vehicles there — troopers, tow drivers, road crews and the motorists they are helping — are exposed to traffic passing at freeway speed, sometimes driven by people who are impaired, distracted or asleep.
Washington law requires drivers approaching an emergency scene on the shoulder to move over one lane if it is safe and possible, and to slow down. If moving over is not possible — because of traffic or a single lane — drivers must still slow to at least 10 mph below the posted speed limit when passing. The law covers far more than police cars: it applies to WSDOT incident-response trucks, highway maintenance vehicles, tow trucks, solid-waste trucks and utility vehicles displaying flashing lights.
Halloween weekend on Washington roads
The crash also came at the end of the Halloween weekend, a period Washington's traffic-safety officials single out every year. The Washington Traffic Safety Commission notes that since 2016, 39 people have died in traffic crashes on Washington roads during the 48-hour period surrounding Halloween, that more than one-third of those fatalities involved an impaired driver, and that nearly two-thirds occurred between 6 p.m. and 3 a.m. — the hours when costume parties end and impaired drivers are most likely to be on the road alongside patrol cars working earlier collisions. Whether impairment is ultimately proven in the Des Moines case will be decided by toxicology and the courts, not by the roadside suspicion reported so far.
Source: Washington Traffic Safety Commission — Halloween impaired-driving release, Oct 2026
What is solid
- A suspected DUI driver struck a Washington State Patrol trooper's car on I-5 near Des Moines on Sunday, Nov 1
- Three people were hospitalised, per The Seattle Times; a passenger was seriously injured, per KOMO News
- The driver was arrested after the crash, per KIRO 7
- 64 WSP patrol units were struck and 19 troopers injured in the first nine months of 2026, per WSDOT/WSP figures
What is only claimed
- Whether the driver was in fact impaired — a roadside suspicion at this stage, to be proven or not in court
- The individual conditions of the trooper and the driver, and the exact location and sequence of the crash — not yet released in published reporting
Why this stretch of I-5 matters to our readers
Interstate 5 near Des Moines is part of the Seattle–Tacoma corridor that carries the region's heaviest mix of commuter, airport and freight traffic — Sea-Tac Airport sits just north of Des Moines, and the freeway is the daily route for a large share of Washington's Punjabi truckers, warehouse workers and delivery drivers between the Kent Valley distribution centres and the ports of Seattle and Tacoma. A struck patrol car on this corridor is not an abstraction for them: the same shoulders where troopers work are where trucks pull over with breakdowns, and the same late-night hours are when freight moves. WSDOT marked Crash Responder Safety Week by offering free Traffic Incident Management training to responders around the state on Monday, November 2, and ride-alongs for media with incident-response drivers through the week — a measure of how routine, and how dangerous, roadside work on this freeway has become.
What happens next
The arrested driver faces the standard King County path for a suspected DUI with injuries: booking, toxicology results, and a charging decision by prosecutors, who will decide whether the case is filed as a DUI or as a more serious offence such as vehicular assault, which Washington law provides for when a driver injures another person while impaired or driving recklessly. The State Patrol has not yet, in the reporting available Monday morning, released the names involved, the trooper's condition in detail, or a collision report with the exact location and sequence — those are the facts that will determine how this crash is charged and how it is remembered. Awaaz Punjab will update this story when WSP releases its collision summary and when charging documents are filed.
Source: KIRO 7 News Seattle, I-5 Washington news listing, Nov 1, 2026