Excellent suggestion. I'm going to go out today and pick up some of those triangles. Last summer we had a tire blowout, and I found myself in exactly the situation you are describing. It was frightening, and I'm not easily frightened. All I had was a flare, and I couldn't get it to light. I had DW call 911 and get us police protection. That worked out really well, but until he arrived, we were definitely "in harm's way."
Thanks for posting this.
-Speak
It's just Mrs. SpeakEasy and me now (empty-nesters). But we can choose from among 7 grandchildren to drag along with us!
2014 F-150 Super Crew Short Bed 3.5L Ecoboost
2014 Flagstaff Micro Lite 23LB