Traffic on the H-1 Freeway heading west near Waikele was slow due to a semi-trailer truck that was on fire Monday afternoon.
It appeared the two right lanes on the freeway were closed while crews clean up at the scene.
The fire started at around 4 p.m.
Fire officials say the driver of the truck heard a "bang" and pulled over. By the time he got out, the flames had spread over most of the truck.
No one was injured and there was no damage to the cargo.