LK DMT Light Vehicle Written common mistakes
LK DMT Light Vehicle Written · Understand the traps and how to avoid them.
Confusing the validity period and renewal timing of the light vehicle driving licence, and treating the learner's permit validity as if it were the full licence validity.
Candidates study the licence categories in isolation and assume all permits and licences share one renewal cycle, so they memorise a single number and apply it to every document.
What to do instead
Build a small comparison table listing each licence or permit type with its validity period, earliest renewal date, and consequence of late renewal. Test yourself by covering one column and reciting it, then verify against the current licensing authority guidance.
Applying for a duplicate licence without being able to state what documents and declarations are required, or assuming a duplicate automatically extends the licence expiry date.
Candidates conflate replacement of a lost or damaged card with renewal, because both involve a visit to the licensing office and a new photograph.
What to do instead
Learn the duplicate process as a separate sequence: identity proof, police report or sworn declaration for loss, fee payment, and the rule that the replacement carries the original expiry date. Write the sequence from memory and check each step.
Treating a foreign licence conversion as automatic and skipping the requirement to verify whether the foreign licence is recognised, whether a theory or practical test is required, and whether residency conditions apply.
Candidates rely on anecdotes from friends who converted a licence in another jurisdiction and generalise that experience to the local rule set.
What to do instead
Study the conversion eligibility criteria as a checklist: recognised issuing state, minimum holding period, residency or visa status, medical fitness, and any required test. Practise with hypothetical applicant profiles and decide eligibility for each.
Completing an ownership transfer mentally as a single step, then failing questions about who must sign, the deadline for notifying the registration authority, and who bears liability for offences committed before the transfer is recorded.
The transfer feels intuitive, so candidates skip the procedural detail and remember only that the buyer and seller must agree.
What to do instead
Map the transfer as a timeline: agreement, signatures on the transfer form, submission deadline, issue of the new registration certificate, and the point at which liability shifts. Rehearse the timeline with a concrete example involving a sale on a specific date.
Assuming vehicle registration renewal and emission or roadworthiness testing are the same transaction, and therefore missing questions about what happens to registration when a test is failed or overdue.
In practice the services are often handled at the same counter, so candidates merge them into one mental category.
What to do instead
Separate the two processes explicitly: registration renewal confirms continued registration and fee payment, while the emission test certifies the vehicle's exhaust performance. Note the rule for each about suspension, late fees, and re-testing, and compare them side by side.
Answering right-of-way questions by choosing the polite or cautious option rather than the legally required option, particularly at unmarked intersections and when turning across oncoming traffic.
Candidates rely on everyday driving habits and general courtesy instead of the codified priority rules, and the exam deliberately offers a courteous-sounding distractor.
What to do instead
Learn the priority hierarchy as an ordered list: signals, then signs, then markings, then the default rule for unmarked junctions. For each scenario type, state who yields and why, citing the rule level that decides it.
Misjudging safe following distance and stopping distance by quoting a single fixed gap instead of a speed-dependent rule, and ignoring the effect of wet roads or load.
The two-second rule is widely known as a slogan, so candidates memorise the number without understanding how it scales with speed and surface conditions.
What to do instead
Work through stopping distance as a calculation: reaction distance plus braking distance, with multipliers for rain and for reduced traction. Practise estimating the gap at several speeds and confirm the rule the exam expects you to apply.
Confusing regulatory signs with warning signs and giving way signs with stop signs, especially where shape and colour are the only distinguishing feature.
Candidates learn sign meanings from lists and photographs but never learn the shape and colour grammar that lets you classify an unfamiliar sign.
What to do instead
Learn the classification system first: circles for prohibition, triangles for warning, rectangles for information, and octagons for stop. Then sort a mixed set of descriptions by shape and colour before reading the meaning, so classification becomes automatic.
Misreading road markings at junctions, such as treating a broken centre line as a no-overtaking zone or ignoring the stop line associated with a stop sign, and misinterpreting lane arrows at roundabouts.
Markings are learned incidentally while driving and are rarely studied formally, so candidates rely on vague impressions of what a line means.
What to do instead
Study markings by function: longitudinal lines for separation and overtaking, transverse lines for stopping and yielding, and arrows for permitted direction. For each, state what action is required and what is merely advisory, then test yourself on junction layouts described in words.
Selecting the wrong vehicle class or licence category for a described vehicle, and missing the emission test obligations and service intervals attached to that class.
Candidates memorise class letters without linking them to weight, seating capacity, or axle configuration, and treat emission testing as a separate topic rather than a consequence of class.
What to do instead
Build a class matrix with columns for maximum mass, passenger capacity, trailer allowance, and emission test frequency. Fill it from the official definitions, then answer scenario questions by locating the vehicle in the matrix before choosing the class or the test obligation.