Bulgaria ADR Driver common mistakes
Bulgaria ADR Driver · Understand the traps and how to avoid them.
Treating the 1,000-point threshold as a rule that applies to every load, and skipping the small-load exemption calculation entirely (or applying it to tanks, which are excluded).
Candidates memorise '1,000 points' as a headline number and never learn that the multiplier (×50 for packages, ×1 for tanks) and the exemption logic decide whether the driver needs a training certificate, orange plates and full documentation.
What to do instead
Practise 10 short loads: list each substance, its transport category, multiply quantity by the category factor, sum, and state which requirements drop away below 1,000. Always check whether the load is in tanks or bulk, because the small-load exemption does not apply there.
Assigning a substance to a class by its commercial name or everyday use rather than by its actual hazard properties and UN number.
Names like 'paint', 'cleaning fluid' or 'fertiliser' sound familiar, so candidates guess a class instead of looking up the UN number, packing group and proper shipping name.
What to do instead
For every exercise substance, first find the UN number in the dangerous goods list, then read off class, packing group, labels and special provisions. Build a habit of never writing a class without a UN number beside it.
Choosing packaging by size and convenience instead of by packing instruction, packing group and the UN packaging code marked on the package.
Candidates confuse the packing group (I, II, III) with the packaging's own performance mark and assume any sturdy drum is acceptable for any liquid.
What to do instead
Decode the UN mark field by field (packaging type, performance level X/Y/Z, hydrostatic test pressure, year, authority) and match X to PG I, Y to PG II, Z to PG III. Check the packing instruction in the dangerous goods list before selecting anything.
Placing orange plates on the vehicle for loads that do not require them, or leaving them off a load that does, and mixing up the plain plate with the plate carrying the hazard identification number.
The two-plate arrangement for tanks versus the single plain plate for packaged goods is easily reversed, and candidates forget that plates must be removed or covered when no longer needed.
What to do instead
Learn the decision tree: tank or bulk load gets plates with hazard identification number at front and rear; packaged loads above the threshold get plain orange plates front and rear; below the threshold, none. Rehearse the removal rule as part of the same answer.
Writing the transport document from memory with missing or invented fields, such as omitting the tunnel restriction code, the packing group, or the total quantity.
Candidates treat the document as a formality and do not realise that a missing tunnel code or wrong total quantity makes the paperwork non-compliant and can mislead the driver and emergency services.
What to do instead
Memorise the mandatory field sequence and write one full document for a tank load and one for a packaged load, then self-check each field against the list. Include the tunnel restriction code and total quantity every time, even in practice.
Leaving the vehicle unattended, or parking it in a built-up area or near a tunnel entrance, without applying the supervision and parking rules for the load carried.
Candidates apply a single vague idea of 'park safely' and forget that supervision requirements depend on the load, and that parking near tunnels, dwellings and busy places is restricted.
What to do instead
Learn the supervision triggers and the parking hierarchy: secure supervised parking where required, otherwise a suitable off-road site away from dwellings and tunnel approaches. State the reason for each choice in practice answers.
Handling an incident by starting first aid or firefighting before securing the scene, warning other traffic and identifying the substance from the documents.
Candidates picture dramatic scenarios and jump straight to the casualty, forgetting that a second collision or an unknown substance makes the responder the next victim.
What to do instead
Use a fixed sequence in every answer: stop and secure, warn traffic, identify from the transport document and labels, protect yourself, then act. Practise two scenarios (spill of a corrosive, fire near a tank) and write the sequence out each time.
Assuming any tunnel can be used if the load is small, and not knowing how to read the tunnel restriction code from the transport document.
The tunnel categories (A to E) and the restriction codes look like arbitrary letters, so candidates ignore them or treat them as advisory rather than as a routing prohibition.
What to do instead
Learn the category letters and which restriction codes are banned in each. Take three loads with different codes and decide, for each, which tunnel categories are open. Always locate the code on the document before planning the route.
Loading incompatible goods together, or placing packages so that labels and orange plates are hidden, without checking segregation and mixed-loading rules.
Candidates focus on fitting the load in the vehicle and forget that some combinations are prohibited and that markings must stay visible from outside.
What to do instead
Before every loading exercise, check the segregation table for the classes involved and confirm that labels, plates and the document are accessible. Write a short loading plan naming the classes, the segregation result and where the plates go.
Treating class 1 and class 7 loads like ordinary packaged goods, ignoring compatibility groups, mixed-loading limits and the special supervision and documentation rules.
Explosives and radioactive material appear rarely in daily work, so candidates skim the special provisions and apply general packaging and loading habits.
What to do instead
Make a one-page summary per class: compatibility groups and mixed-loading prohibitions for class 1; package types, transport index, segregation distances and exclusive-use rules for class 7. Test yourself on two mixed-load decisions for each class.