Narrative:

Flew aircraft on a planned VFR flight to ZZZ1. Aircraft fueled to maximum capacity. Visually checked full with full readings, both left and right tanks (24.5 gallons). Flew 3.6 hours with projected burn of 5.7 gph. Decided to land at ZZZ to shorten trip as fuel gauge read 118 full on approximately 6 mi final for runway 17L. The aircraft began indicating possible engine failure or fuel starvation. Elected to safely land on highway with no opposing traffic. Towed aircraft onto side of dirt road. Once clear of the road, tower was advised of safe landing via air carrier relay. Local police and fire departments arrived to verify situation. Local FBO notified for aircraft check and possible fuel requirement. FAA notified by local tower. Spoke with FAA inspector in charge to obtain permission to fuel and aircraft status. Fueled aircraft and performed check. Aircraft appeared normal. Flew aircraft to ZZZ. Normal takeoff and landing.

Google
 

Original NASA ASRS Text

Title: A SINGLE PLT MADE A FORCED OFF ARPT LNDG DUE TO FUEL EXHAUSTION 5 NM N OF HRL.

Narrative: FLEW ACFT ON A PLANNED VFR FLT TO ZZZ1. ACFT FUELED TO MAX CAPACITY. VISUALLY CHKED FULL WITH FULL READINGS, BOTH L AND R TANKS (24.5 GALLONS). FLEW 3.6 HRS WITH PROJECTED BURN OF 5.7 GPH. DECIDED TO LAND AT ZZZ TO SHORTEN TRIP AS FUEL GAUGE READ 118 FULL ON APPROX 6 MI FINAL FOR RWY 17L. THE ACFT BEGAN INDICATING POSSIBLE ENG FAILURE OR FUEL STARVATION. ELECTED TO SAFELY LAND ON HWY WITH NO OPPOSING TFC. TOWED ACFT ONTO SIDE OF DIRT ROAD. ONCE CLR OF THE ROAD, TWR WAS ADVISED OF SAFE LNDG VIA ACR RELAY. LCL POLICE AND FIRE DEPTS ARRIVED TO VERIFY SIT. LCL FBO NOTIFIED FOR ACFT CHK AND POSSIBLE FUEL REQUIREMENT. FAA NOTIFIED BY LCL TWR. SPOKE WITH FAA INSPECTOR IN CHARGE TO OBTAIN PERMISSION TO FUEL AND ACFT STATUS. FUELED ACFT AND PERFORMED CHK. ACFT APPEARED NORMAL. FLEW ACFT TO ZZZ. NORMAL TKOF AND LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.