HI-CDL Passing Score 2026: Exactly What You Need to Pass

The Number You Actually Need

If you're prepping for the Hawaii CDL Permit Test, the single most important number to memorize is 80%. That's the minimum score required on every knowledge test administered under Hawaii's CDL program, per federal CDL testing standards enforced through Hawaii's county driver licensing offices under the state program overseen by the Hawaii Department of Transportation. This applies whether you're taking the General Knowledge test, an air brake endorsement test, or a school bus knowledge test.

There's no partial credit tier, no "70% with remediation," and no sliding scale based on which domain you're testing in. Whether you're sitting for Domain 1 (General Knowledge) or Domain 7 (Double/Triples), the bar is the same: get at least 8 out of every 10 questions right, and you pass that test.

How the HI-CDL Knowledge Tests Are Scored

Each knowledge test is scored as a simple percentage of correct answers. There's no weighting by question difficulty and no bonus points for finishing quickly. What matters is that your correct-answer count divides out to 80% or higher on the specific test you're sitting for.

Because each domain is tested separately, your General Knowledge score has no bearing on your Tanker or Hazardous Material score - you must independently clear 80% on every knowledge test relevant to the class and endorsements you're pursuing. If you're only pursuing a standard Class B permit with no endorsements, you may only need to pass General Knowledge and possibly Air Brake. If you're aiming for a combination vehicle with hazmat and tanker capability, you'll need to independently clear 80% on each of those tests too.

For a full walkthrough of what each test actually covers, the HI-CDL Exam Domains 2026: Complete Guide to All 8 Content Areas breaks down every one of the 8 domains in detail.

Passing Score by Domain

Below is how the 80% requirement applies across each of the 8 HI-CDL knowledge domains. The percentage required never changes - what changes is the content you need to master to reliably hit it.

For a deeper study strategy built around these exact domains, see the HI-CDL Study Guide 2026: How to Pass on Your First Attempt.

Fees, Retakes, and the Wait-Week Rule

Understanding the passing score matters more once you factor in what a failed attempt actually costs - in both time and money. Here's the fee structure you're working with:

If you fail a required knowledge test, you're not walking back in the next day. Hawaii's testing rules impose at least a one-week wait before you can retest. That means missing the 80% mark on, say, your Hazmat test doesn't just cost another $5 - it costs you a minimum of seven days before you can attempt it again, on top of whatever scheduling delays your county office has.

This wait period is exactly why hitting 80% on the first attempt matters more than most applicants realize going in. It's not just a knowledge threshold - it's a scheduling gate that affects everything downstream, including your ELDT enrollment timing if you're a first-time Class A or B applicant, a Class B-to-A upgrade candidate, or pursuing your first P, S, or H endorsement.

A Domain-Focused Prep Timeline

Rather than generic study advice, here's how to sequence your prep around the specific domains you'll be tested on, assuming you need General Knowledge plus two or three endorsements.

This sequencing matters because later domains build on earlier ones - Double/Triples (Domain 7) assumes you already understand Combination vehicle handling (Domain 6), and School Bus (Domain 8) assumes solid General Knowledge fundamentals. Skipping ahead without the foundation usually shows up as missed points on the harder domain, not the easier one.

To gauge realistically how much prep time you need before attempting any domain, read How Hard Is the HI-CDL Exam? Complete Difficulty Guide 2026, and check HI-CDL Pass Rate 2026: What the Data Shows for context on how candidates typically perform.

Why Candidates Miss 80%

Most candidates who fall short of 80% aren't failing because the material is impossibly hard - they're failing because of predictable, fixable gaps:

• Studying General Knowledge only, then getting blindsided by endorsement tests. Each endorsement domain has its own vocabulary and procedures that General Knowledge prep doesn't cover.
• Underestimating Air Brake content. This domain is dense with system-specific terminology that doesn't overlap much with general driving knowledge.
• Ignoring ELDT requirements before testing. If you're a first-time Class A/B applicant, upgrading from B to A, or pursuing your first P, S, or H endorsement, ELDT training is a prerequisite step - skipping ahead to testing without it wastes an attempt.
• Not accounting for the retest wait. Candidates who assume they can "just retake it tomorrow" get caught off guard by the mandatory one-week delay.

Before you schedule, make sure you actually meet the underlying eligibility requirements - age minimums (18 for a permit, 21 for a full CDL), valid Hawaii driver license, and medical certification are all prerequisites, detailed fully in HI-CDL Requirements 2026: Eligibility, Prerequisites & How to Qualify. And if you're weighing whether the investment of time and fees is worth it for your career goals, Is the HI-CDL Certification Worth It? Complete ROI Analysis 2026 and HI-CDL Salary Guide 2026: Complete Earnings Analysis lay out the bigger picture.

Once you're ready to test your knowledge against realistic questions modeled on the actual domains, practicing through our full practice test platform is the fastest way to see exactly where you stand relative to the 80% line before you walk into a county office. Running timed sets on the practice exams also helps you get comfortable with the pacing you'll need on test day.

Frequently Asked Questions