What this tracks
This dataset records the physical characteristics of Tennessee state roads, including speed limits, number of lanes, and terrain type for specific segments.
Why it matters to you
This data helps you understand road conditions before you travel. If you’re planning a route through Tennessee, you can check whether a road has steep terrain that might slow down trucks or RVs, or see if a narrow two-lane road might cause delays during peak hours. Business owners shipping goods can use this information to plan delivery routes that avoid challenging terrain or roads with access restrictions.
How to read this data
SPD_LMT — the posted speed limit for that road segment, shown in miles per hour like 30 or 55. NBR_LANES — total number of lanes in both directions, with values like 2 for a standard two-lane road or 4 for a divided highway. TY_TERRAIN — describes the landscape as “Flat,” “Rolling,” or “Mountainous,” which affects driving difficulty and fuel consumption. DRCT_ONE_WAY — indicates traffic flow, typically showing “Two-Way Traffic” for most roads.
Where this leaves you
This dataset doesn’t let you look anything up by your address, but it’s still a window into how the state operates. Read it to understand the scope of the program and what the official records contain; the state’s own interactive map (linked on this page) shows the locations involved.