Czech Theory Test D cheat sheet

Speed limits in built-up areas: 50 km/h (30 km/h in residential zones); outside built-up areas: 90 km/h; motorways: 130 km/h; expressways: 110 km/h.

Minimum following distance: at least 2 seconds in good conditions; at least 4 seconds on motorways or in poor conditions.

Overtaking is prohibited at pedestrian crossings, railway crossings, and intersections (unless on a priority road and overtaking a two-wheeled vehicle).

Safety distance when passing cyclists: at least 1.5 m outside built-up areas; at least 1 m in built-up areas.

Right of way at unmarked intersections: give way to vehicles approaching from the right.

Mandatory use of seat belts and child restraint systems; children under 150 cm or 36 kg must use appropriate child seats.

Driving under the influence: blood alcohol limit is 0.0 g/kg for professional drivers; 0.5 g/kg for others (Czech Republic).

Emergency vehicles with active blue lights and siren have priority; drivers must yield and, if necessary, stop.

Priority signs: 'Dej přednost v jízdě!' (Give way) is a red inverted triangle; 'Hlavní pozemní komunikace' (Priority road) is a yellow diamond.

Prohibitory signs are circular with a red border (e.g., 'Zákaz vjezdu' – No entry).

Mandatory signs are circular with a blue background (e.g., 'Příkázaný směr jízdy' – Mandatory direction).

Information signs are rectangular, usually blue or green; motorway signs are green with white symbols.

Road markings: continuous white line – no crossing; broken white line – may cross if safe; yellow zigzag – no stopping.

Traffic light signals: red – stop; amber – stop unless too close to stop safely; green – proceed if clear; flashing amber – proceed with caution.

Police officer signals override traffic lights and signs; a raised arm means stop for all directions.

Temporary signs (yellow background) take precedence over permanent signs.

Bus braking distance increases with load; with a full load, braking distance can be 20–30% longer than when empty.

Use engine braking on long downhill gradients; select a lower gear to avoid overheating the brakes.

When turning, account for the larger turning radius and tail swing; swing the rear of the bus outward before completing the turn.

Maintain a steady speed and avoid sudden lane changes; buses have large blind spots, especially on the right side and behind.

In strong crosswinds, reduce speed and hold the steering wheel firmly; buses have high side area.

When reversing, use mirrors and a guide if available; the reversing camera is an aid, not a substitute for direct observation.

Before driving, adjust mirrors, seat, and steering wheel; ensure all passengers are seated or holding handrails before moving off.

Minimum tyre tread depth for buses: 3 mm for radial tyres (winter tyres 4 mm).

Check tyre pressure when cold; under-inflation increases fuel consumption and tyre wear.

Daily pre-trip checks: lights, brakes, steering, tyres, fluids, and emergency exits.

Air pressure in the braking system must reach the required level before driving; listen for air leaks.

Bus body must be free of sharp edges; emergency exits must be marked and operable from inside and outside.

Fire extinguisher must be checked regularly and be within expiry date; first aid kit must be complete.

Diesel particulate filter (DPF) requires regeneration; short trips can clog it; follow manufacturer instructions.

AdBlue is used in SCR systems to reduce NOx emissions; low AdBlue level can limit engine power.

Scan the road 12–15 seconds ahead; check mirrors every 5–8 seconds.

Maintain a 2-second following distance in ideal conditions; increase to 4 seconds in rain, fog, or darkness.

Use the SIPDE process: Scan, Identify, Predict, Decide, Execute.

Avoid distractions: no mobile phone use while driving; hands-free is allowed but can still distract.

In fog, use low beam headlights and fog lights; do not use high beam as it reflects back.

When approaching a pedestrian crossing, slow down and be prepared to stop; pedestrians have priority.

Fatigue impairs reaction time; take a 15-minute break every 2 hours; do not rely on coffee or fresh air alone.

Emergency numbers in Czech Republic: 112 (general), 155 (ambulance), 158 (police), 150 (fire).

At an accident scene: secure the area, switch on hazard lights, place warning triangle at least 50 m behind (100 m on motorways).

Check responsiveness and breathing; if not breathing, start CPR: 30 chest compressions (100–120/min) and 2 rescue breaths.

Control severe bleeding by applying direct pressure with a clean cloth or dressing.

Do not move an injured person unless there is immediate danger (e.g., fire).

For suspected spinal injury, keep the head and neck aligned and wait for emergency services.

Report the accident to the police if there is injury, fatality, or damage to third-party property exceeding CZK 100,000.

Driver must carry: driving licence, vehicle registration certificate, proof of insurance (green card for international), and medical certificate if required.

Professional bus drivers must have a valid D licence, CPC (Certificate of Professional Competence), and a medical fitness certificate.

Accident reporting: if only material damage and no injury, a joint accident report can be used; otherwise call police.

Driving licence points system: serious offences result in points; 12 points leads to licence withdrawal.

Vehicle must undergo regular technical inspections: buses every 6 months after 4 years from first registration.

Drivers must report changes of address or name to the licensing authority within 10 working days.

Tachograph records must be kept for at least 1 year and produced on request by enforcement officers.

EU rules: maximum daily driving time 9 hours (extendable to 10 hours twice a week); weekly driving max 56 hours; fortnightly max 90 hours.

Breaks: after 4.5 hours driving, take a 45-minute break (can be split into 15 + 30 minutes).

Daily rest: at least 11 hours (can be reduced to 9 hours three times between weekly rests).

Weekly rest: at least 45 hours (can be reduced to 24 hours, with compensation).

Passengers must be informed of safety rules, emergency exits, and use of seat belts.

Loading and unloading: ensure bus is stationary, parking brake applied, and doors closed before moving.

In case of a breakdown, move passengers to a safe place and call for assistance; use warning triangle and hazard lights.

Economical driving: accelerate smoothly, maintain steady speed, use highest practical gear, and anticipate traffic flow.

Avoid idling: switch off engine if stationary for more than 1 minute (except in traffic).

Regular maintenance (air filter, tyre pressure, engine tuning) reduces fuel consumption by up to 10%.

Use cruise control on motorways to save fuel; but not in hilly terrain.

Reduce aerodynamic drag: remove roof racks when not in use; keep windows closed at high speeds.

Plan routes to avoid congestion and choose eco-friendly routes; use GPS with traffic information.

Electric and hybrid buses: regenerative braking recovers energy; smooth acceleration extends range.