Open the driver's door of a heavy-duty pickup and look at the sticker on the frame. Wyoming's newest highway rule depends on the GVWR number printed there. WYDOT says that's the most common place to find a vehicle's Gross Vehicle Weight Rating. Since Oct. 1, 2026, the program has also covered anyone towing a trailer of any size over Teton Pass, whether it's a single-axle utility trailer or a two-horse rig.
The WY22 Safe Pass program came out of a hard summer on Highway 22. That includes the July 7 runaway dump truck crash just west of Wilson . About 200 people from both sides of the state line came to the Old Wilson Schoolhouse on Aug. 3 to talk about safety on the pass. Most coverage has framed the result as a rule for commercial haulers and visitors in rental RVs. The text of the rule covers more than that. The free certification takes about ten minutes, and it's simple to do once you know you need it.
Where the 10,000-Pound Line Falls
According to WYDOT's Safe Pass FAQ, a driver has to self-certify every year when operating any of these:
- A recreational vehicle of any kind
- Any vehicle towing any trailer
- A vehicle that meets 10,000 pounds or more by any one of three measures: actual Gross Vehicle Weight, the manufacturer's Gross Vehicle Weight Rating, or the Gross Combined Weight Rating
The third item is the one that reaches past commercial trucks. GVW is what the vehicle actually weighs loaded. GVWR and GCWR are manufacturer ratings, so they apply whether the bed is empty or full. In its own announcement backing the program, the Idaho Transportation Department said the 10,000-pound mark is "about the size of a large pickup truck." WYDOT's FAQ puts the burden of knowing those figures on the driver.
One detail helps households with more than one qualifying vehicle. A certification belongs to the person, and one certificate covers every vehicle that person drives. Signup at safepass.wyoroad.info is free. It asks for at least three minutes on the education material, which covers gear selection, brake fade, pre-trip inspections and trailer and weight restrictions. Then you check a series of acknowledgment boxes. You'll get a downloadable certificate, and WYDOT suggests keeping a copy on your phone and a printed copy in each vehicle that needs one. If you don't have an email address, offline forms are available at the WYDOT office at 1040 Evans Road in Jackson, at the Port of Entry at 519 US-26 in Alpine, and at the eastbound pullouts near the state line.
As of early October, 2,822 drivers had certified, according to Stephanie Harsha, WYDOT's District 3 public relations specialist. Idaho, Wyoming and Utah drivers accounted for the most.
Why the Trailer Clause Only Runs Six Weeks This Fall
Safe Pass adds to the pass's existing rules and replaces none of them. According to the Wyoming Highway Patrol, a 60,000-pound weight limit applies at all times on WY-22 between Wilson and the Idaho line, and no trailers of any kind are allowed on the pass from November 15 to April 1 each winter.
Put those dates next to the Safe Pass launch and the trailer clause turns out to be seasonal. Between Oct. 1 and Nov. 15 this year, about six weeks, a Wilson household can tow a utility trailer, boat or horse trailer over the pass with a current certification. From Nov. 15 until April 1, the certification doesn't matter for towing, because trailers aren't allowed at all. Then the summer towing season starts again with the same certification still in force, since certificates last one year.
Over the winter, the 10,000-pound threshold is the part that still applies. A heavy-duty pickup with no trailer still needs a certified driver all winter. Chain requirements can also apply to every vehicle during restricted conditions, whatever its weight. For anyone who can't or won't certify, WYDOT's alternate route is US-26 through Swan Valley and Alpine.
Who Checks, and When
WYDOT hasn't planned traffic stops just to check certifications. The News&Guide reported that an officer who pulls a driver over for some other reason can ask to see one. Starting this month, there are more officers on the pass to make those stops.
This month, the News&Guide reported that Teton County commissioners had unanimously approved $140,000 for two equipped patrol vehicles, $70,000 each. That lets Sheriff Matt Carr move existing staff onto dedicated Teton Pass patrols seven days a week, on Highway 22 between Wilson and the Idaho line. Deputies already patrolled the pass, especially at commuter hours, but they had to leave for other calls. On a well-staffed day, four deputies cover the whole county. Carr said the patrols would start right away, and that a permanent schedule would take "about a week or two."
Sheriff's Lt. Mark Priest said deputies will start with education. That means explaining the regulatory signs and helping drivers complete their certification, while also enforcing against unsafe driving and the seasonal restrictions that begin Nov. 15. Commissioner Len Carlman described how the separate efforts are adding up:
"This has been described as an incremental step, but lots of incremental steps are coming together pretty quickly."
The penalties are in state law. Wyoming statute provides up to $750 and/or 30 days in jail for a willful violation under §24-1-109(a). Under the subsection on weight-based closures, it provides a $1,000 fine and up to 30 days for a first offense, and $2,500 and up to 30 days for a second conviction within three years. WYDOT's Sept. 21 launch release says violations involving the 10,000-pound restriction may be treated as weight-based closure violations. The News&Guide reported that officers decide which statute applies case by case.
The Signs Now Address Every Driver
The signs on the pass have changed along the same lines. In a Sept. 4 release, WYDOT scheduled new roadside signage to start going up Sept. 21. The plan included "Must Stop Brake Check" signs at the summit and "No Parking" signs at the gravel escape ramp and the arrestor. It also changed the wording on sharp-curve, steep-grade and low-gear signs from "Truckers" to "All Vehicles." The release didn't say which drivers have to stop at the brake check or what the check involves. WYDOT is also designing "You are here" diagram signs that show grades, restrictions and the alternate route, for the scale house, the state line and the summit turnout.
WYDOT's FAQ gives the reason for the new wording. Typical steep highway grades run 5 to 6 percent, and Teton Pass reaches 10 percent. The agency says that grade can catch "tourists, commercial drivers and even commuters off guard." Automatic transmissions get their own entry in the FAQ. The Highway Patrol often hears "But it's an automatic" from drivers who lost their brakes, and WYDOT directs owners to their manuals to learn how to hold a low gear.
The safety systems already on the pass are an eastbound escape ramp at milepost 8.3 and a vehicle arrestor at milepost 7.44. Both show up as a layer on WYDOT's 511 map. WYDOT reported that the arrestor, built in 2017, has been used 11 times in nine years.
The Second Arrestor Wilson Is Still Waiting On
Rules and signs have come faster than new hardware on the pass. In the week after the fatal crash, WYDOT resident engineer Bob Hammond told the News&Guide that plans for a second arrestor were "on hold." The project is at least six years out in the State Transportation Improvement Plan.
Siting is what has held it up. The first proposed location near Trail Creek Ranch needed more right-of-way than WYDOT had, and the property is protected by a conservation easement. In 2022 the agency proposed a site just uphill of the Stagecoach Bar instead. A group of Wilson residents objected that traffic regularly backs up past that point, so a runaway truck would reach a line of cars before it reached the arrestor.
A WYDOT speed study recommended lowering the 45 mph limit to 40 mph on the descent toward downtown Wilson. The News&Guide reported it as a recommendation, not a limit already posted. The Teton Pass safety coalition at tetonpass.org reports that WYDOT and ITD are coordinating signs and messaging with Teton County and the coalition, from eastern Idaho to Hoback.
The Pass Calendar From Here
- Now through Nov. 14: Safe Pass certification applies to RVs, all trailers and vehicles of 10,000 pounds or more. Daily sheriff's patrols are being set up, with education first.
- Nov. 15: The annual trailer ban begins, and seasonal restrictions become part of deputies' enforcement.
- Through winter: Certification still applies to vehicles of 10,000 pounds or more, chains may be required for all vehicles, and the 60,000-pound limit stays in place.
- April 1: Trailers are allowed back on the pass, and towing again requires a current certification.
- One year from your signup date: The certification expires. WYDOT deletes accounts that aren't renewed and says requirements may change from year to year.
Questions about Highway 22 come up in nearly every Wilson conversation, from Idaho commutes to hauling horse trailers to the ranch and moving furniture into a new place. Bryan Lyster has watched those drive-time details shape everyday life on this side of the valley since 2007. If you'd like to talk through how access over the pass fits the way you live here, JH Living is glad to help. Let's Connect.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
