Can Tesla FSD Take You Up The Steepest Dirt Road In America All By Itself?
insideevs.com Aug 26, 2026

Can Tesla FSD Take You Up The Steepest Dirt Road In America All By Itself?

AI-summarised brief · reviewed before publication

Tesla’s Full Self‑Driving (FSD) system was tested on Colorado’s Lick Skillet Road, the steepest dirt road in the United States, featuring a 14.2% average grade and 18% peaks. A Model 3 navigated the mile-long stretch without lane markings, maintaining lane position and avoiding obstacles. The test included blind corners, cyclists, and a recovery vehicle. While FSD kept a safe distance from cyclists, it could not pass them and failed to detect a pedestrian near the cyclists, prompting manual intervention. The experiment highlighted both the system’s visual navigation strengths and its current limitations on unpaved terrain.

💡 Why It Matters

  • · The test demonstrates that Tesla’s vision‑based FSD can handle extreme off‑road conditions, suggesting broader applicability beyond paved roads.
  • · However, its inability to pass cyclists and detect pedestrians underscores the need for further safety improvements before full autonomy can be trusted in mixed‑traffic environments.