Step 1: Get Out of the Travel Lanes First
When a car breaks down on I-15, the first job is keeping it rolling toward the shoulder or an exit rather than stopping where it died. The Utah Safety Council's fact sheet is specific about how to do it, and every step is about not startling the traffic behind you.
- Ease off the accelerator smoothly. Do not brake hard or suddenly.
- Signal your intentions so drivers behind you can read what is happening.
- Work the car toward the breakdown lane, checking mirrors before any lane change.
- If you are on the interstate and an exit is reachable, take the exit.
Through Sandy that usually means Exit 295 at 9000 South or Exit 293 at 10600 South. Both put you on surface streets with room to wait and somewhere for a truck to reach you without working beside 70-mph traffic. A car that has lost power still carries a surprising amount of momentum on the downhill stretches of I-15, and that momentum is worth more than it feels like at the time.
Step 2: Call 911, Even If It Feels Like an Overreaction
A stalled vehicle on a Utah freeway is a 911 call. UDOT tells motorists that a crash, flat tire, mechanical failure or stalled vehicle on the freeway, in traffic or on the shoulder, means dialing 911 immediately. That is not the advice you would get for a car that dies in a driveway, and the difference is the speed of everything around you.
The call does two useful things at once. It starts a trooper or an incident management truck moving toward you with lights and cones, and it puts your location on the record before anyone drifts onto the shoulder. For a vehicle genuinely well clear of the roadway, DPS non-emergency dispatch takes calls at 801-887-3800. Anything touching a live lane is 911, then a call for emergency towing in Sandy.