Coming down the Pali Highway into Kaneohe during a sudden rain squall, the common bad advice is: "If you hydroplaned, you're automatically at fault." That is wrong.

Hydroplaning does not automatically make you liable in Hawaii. What happens next is that fault gets argued based on why you lost control. The other insurer will try to pin it on speed, worn tires, bad following distance, phone use, or driving like the road was dry even though Oahu weather changed in seconds.

Hawaii uses modified comparative negligence under HRS § 663-31. That means you can still recover damages if you were 50% or less at fault. Your compensation gets reduced by your share of blame. If you are found more than 50% at fault, you recover nothing from the other side.

For a Kaneohe-area crash, fault usually gets built from the Honolulu Police Department report, vehicle damage, witness statements, dashcam or store footage, app data, weather conditions, and tire/brake condition. If you were doing Uber, DoorDash, or Amazon Flex, expect arguments that you were distracted by the app or rushing a delivery during summer tourist traffic.

There is another Hawaii-specific twist: auto injury claims start with no-fault/PIP coverage. Your own policy usually pays initial medical expenses and wage loss regardless of fault. To pursue the other driver for pain and suffering, you generally must meet Hawaii's tort threshold, such as more than $5,000 in medical-rehabilitative expenses or a qualifying serious injury under HRS Chapter 431:10C.

So if they say the Pali hydroplane was your fault, the chain of events is not "case over." It becomes a percentage fight. And in Hawaii, that percentage is everything.