Tan Teng Hock Unlicensed Instructor: Jailed After 100+ Students

Tan Teng Hock, 67, operated as an unlicensed driving instructor for 16 months in Singapore—teaching over a hundred students at roughly half the market rate before authorities caught on. A court sentenced him to five weeks in jail, a S$1,000 fine, and a two-year driving ban.

Age: 67 · Students Taught: 110-130 · Period of Teaching: Dec 2023 – Mar 2025 · Fees Charged: S$60-S$70 per lesson · Jail Sentence: 5 weeks

The table below consolidates the key data points established through court proceedings and police records.

How to check if someone is a driving instructor?

Singapore’s traffic authorities maintain official channels for verifying instructor credentials. The Singapore Police Force notes that three driving centres handle Basic Theory and Practical Tests — these venues work only with registered instructors. Beyond that, students can request to see an instructor’s licence before committing to lessons.

Official registries

Licensed driving instructors in Singapore must display their accreditation documentation. When you enrol at any of the three approved driving centres, the centre itself handles credential verification. For private lessons, ask the instructor directly for their driving instructor’s licence — the document should show a valid expiry date and matching personal details.

License verification steps

A straightforward three-step check can prevent problems down the road. First, request the instructor’s licence number and cross-reference it if possible. Second, verify the photo matches the person providing instruction. Third, confirm the licence has not expired — expired licences are invalid even if the instructor previously qualified.

The implication: An instructor who hesitates or refuses to show credentials should raise immediate red flags. Legitimate professionals have no reason to withhold documentation.

How do I know if I have a bad driving instructor?

Beyond poor teaching technique, some warning signs point to deeper problems. An instructor who lacks proper licensing poses legal and safety risks that no amount of patience can overcome.

Common red flags

• Refuses to show or delays producing a valid driving instructor’s licence
• Charges significantly less than market rates without clear explanation
• Teaches from vehicles without proper insurance documentation
• Has unexplained gaps in their instructing history
• Relies on referrals from someone other than an approved driving school

Qualification checks

Tan’s case illustrates how an unlicensed operator can slip through for months. His licence had been expired since 2001 — yet he attracted over a hundred students before detection. The prosecutor noted that Tan charged between S$60 and S$70 per hour, well below what licensed instructors typically command in Singapore.

The pattern: Students who chose Tan did so partly because of lower costs. That same affordability may have masked the absence of proper licensing and insurance coverage.

Is the ADI test hard to pass?

Becoming a licensed driving instructor in Singapore requires passing rigorous assessments. The process filters out candidates who cannot demonstrate both driving competence and instructional ability.

Pass rates

Online discussions among aspiring instructors suggest Part 3 of the qualifying examination presents particular difficulty. Community posts reference pass rates around 35% for certain components, though official figures from Singapore’s licensing authorities are not widely published in public forums. The Singapore Police Force data shows three driving centres handle both theory and practical assessments, indicating consistent standards across testing venues.

Part 3 challenges

Part 3 typically involves demonstrating instructional techniques under examination conditions. Candidates must show they can communicate driving concepts clearly while maintaining safety standards. The relatively low public pass rates suggest this practical teaching component trips up many applicants who excel at written theory tests.

The implication: High failure rates keep the instructor pool small and legitimate. That scarcity creates temptation for unqualified operators to fill demand.

Which ADI test is the hardest?

Examination difficulty varies based on individual strengths, but Part 3 consistently emerges as the most challenging component in public discourse.

Part comparisons

Part 1 covers theory knowledge — typically manageable for candidates who study the official materials thoroughly. Part 2 tests driving proficiency on the test route itself. Part 3 shifts to instructional demonstration, requiring candidates to explain and correct driving errors in real time while a examiner evaluates their teaching methodology.

Failure stats

Community forums show recurring questions about low Part 3 pass rates, with some candidates reporting difficulty passing despite strong performance in Parts 1 and 2. The Singapore Police Force publishes waiting times and passing rates for theory and practical tests at its three driving centres, though detailed breakdown by examination part is not prominently displayed.

What this means: Tight pass rates keep licensed instructors in demand. Legitimate operators can charge premium rates precisely because the qualification barrier filters out many would-be instructors.

Can anyone clarify. It seems only 35% pass part 3 but is that correct.

The 35% figure circulates in online communities but lacks confirmation from official Singapore sources. Community members frequently cite it when seeking to understand why obtaining a driving instructor licence proves so difficult.

Official pass stats

Singapore’s traffic authorities have not published granular pass rate data by examination part. The Singapore Police Force website shows overall statistics for driving tests but does not break down pass rates for specific instructor qualification components. Without official confirmation, the 35% figure remains anecdotal.

Context for instructors

Even if the exact percentage varies, the underlying message holds: becoming a licensed driving instructor demands substantial effort. Those who complete the process have demonstrated both driving skill and teaching ability. Tan’s case — operating without any licence for over two decades — highlights the gap between qualified professionals and those who bypass the system entirely.

The trade-off: Strict requirements mean fewer instructors available, which can drive up costs. Some students may seek cheaper alternatives without understanding the risks involved.

Steps to verify your driving instructor’s credentials

Given the Tan Teng Hock case, prospective driving students in Singapore should take proactive steps before committing to any instructor — whether through a driving school or private arrangement.

1. Request the licence: Ask the instructor to show their Singapore driving instructor’s licence. Verify the name, photo, and expiry date match the person providing lessons.
2. Check for valid registration: Confirm the licence has not expired. An expired licence means the holder is not currently authorised to teach.
3. Verify vehicle insurance: Ensure the vehicle used for lessons has proper insurance coverage. Tan faced an additional charge for permitting students to use vehicles without valid insurance.
4. Use approved channels: Consider enrolling through one of Singapore’s three approved driving centres. These institutions vet their instructors and handle credential verification for students.
5. Report suspicious instructors: If you encounter an instructor who refuses to show credentials or charges unusually low rates, report the situation to the Singapore Police Force.

Timeline of the Tan Teng Hock case

Understanding when key events occurred helps contextualise the scope of the illegal operation.

The pattern: Tan faced no immediate barrier preventing him from continuing his operation after initial detection. The gap between his arrest and continued teaching lasted months — long enough to add another 40 to 50 students to his roster.

Confirmed facts and uncertainties

What people said

The prosecutor sought four-and-a-half weeks to eight weeks’ jail for Tan, arguing his continued operation after being caught demonstrated a disregard for the law.

— Channel NewsAsia reporting on court proceedings

Despite being arrested and charged, Tan continued teaching, endangering students with his actions and exposing them to vehicles without proper insurance coverage.

— The Straits Times coverage of the sentencing

The implication: Tan’s case was not a momentary lapse in judgment. Court records show he escalated his operation after initial detection — teaching more students and raising his rates even while facing charges.

Summary

Tan Teng Hock exploited a gap that allowed a former instructor with an expired 2001 licence to teach over a hundred students undetected for 16 months. When caught, he kept teaching anyway — and a Singapore court responded with five weeks in jail, a S$1,000 fine, and a two-year driving ban. The sentence lands on a 67-year-old who charged roughly half the market rate to fill a gap left by qualified instructors.

For anyone learning to drive in Singapore, the lesson is straightforward: a cheap rate and a familiar face do not replace a valid licence. Students who skipped credential checks may now face questions about their training history — or discover gaps in their learning that no qualified instructor can retroactively fix.