PoliceNew Zealand

Learn traffic rules with clear explanations and visual examples in our illustrated book, designed to make studying simple and engaging.


42. Police

Police are public authorities responsible for enforcing laws, maintaining public safety and managing situations that may affect road traffic. In traffic, police officers may control vehicles, enforce traffic rules, investigate collisions, direct traffic and respond to emergencies.

Road users must follow lawful instructions given by police officers or other authorised traffic-control personnel. Police directions may temporarily override traffic lights, road signs or normal traffic arrangements, depending on local law.

New Zealand Police Holden Commodore patrol car. (New Zealand)
Wikimedia.org • 111 Emergency • CC BY
What is the role of police in road traffic?

Police help enforce traffic laws, manage traffic, investigate collisions and respond to dangerous situations. They may also carry out roadside checks and direct road users.

Must you obey a police officer directing traffic?

Yes. Lawful directions given by an authorised police officer must be followed. In many countries, those directions take precedence over traffic lights, road signs and normal priority rules.

What should you do if police signal you to stop?

Slow down, follow the officer's directions and stop at a safe location as instructed. Do not make sudden movements or continue driving unless directed to do so.

Can police direct you through a red traffic light?

Yes, where authorised by local law. A police officer controlling traffic may instruct road users to proceed even when a traffic light or sign would normally require them to stop.

Can police check your driving documents?

Yes. Police may require drivers to provide documents such as a driving licence, vehicle registration, identification or proof of insurance according to local law.

Can police carry out alcohol or drug checks?

Yes. Traffic police may conduct legally authorised alcohol and drug checks using procedures such as breath, saliva or other approved tests.

Can police temporarily close a road?

Yes. Roads or lanes may be temporarily closed or traffic diverted because of collisions, emergencies, investigations, public events or other safety concerns.

What should you do near police controlling an accident scene?

Reduce speed, remain alert and follow all directions. Do not enter a closed area or interfere with emergency personnel, and leave sufficient space for emergency vehicles.

What should you do when a police vehicle approaches with emergency signals?

Follow the local rules for priority vehicles. Drivers generally have to make sufficient space, give way and stop where necessary so that the emergency vehicle can pass safely.

Can police order a parked vehicle to be moved?

Yes, where local law permits it. Police or another authorised authority may require a vehicle to be moved when it obstructs traffic, creates danger or must be removed for operational reasons.

1 New Zealand 2 Motorway 3 Speed limit 4 Advisory speed 5 Bike path 6 Pedestrian warning 7 Bridge 8 Speed bump 9 One-way traffic 10 Slope 11 Bus lane 12 Stop sign 13 Give way 14 Roundabout 15 Road narrowing 16 Pedestrian crossing 17 Railway crossing 18 Mandatory direction 19 Turn prohibition 20 School area 21 Crossing animals 22 Slippery road 23 Curve 24 Chevron 25 Wrong-way driving 26 Roadworks 27 Crosswind 28 Height limit 29 Priority at the next junction 30 Traffic lights 31 Pedestrian lights 32 Road markings 33 Parking 34 Disabled parking 35 Reversing 36 U-turn 37 Tourist attraction 38 Charging station 39 Dangers 40 Cyclist 41 Bus 42 Police 43 Ambulance 44 Pothole 45 Path 46 Particulates 47 Air pollution 48 Rush hour 49 Road code 50 Two-way traffic 51 Street gutter 52 Cargo bike 53 Forestry vehicle 54 Construction vehicle 55 Semi-trailer truck 56 Trolleybus 57 Speed pedelec 58 Delivery vehicle 59 Idling 60 Tow truck 61 Four-wheel drive 62 Bicycle 63 Motorcycle equipment 64 Tram 65 Rail track 66 Caravan 67 Trailer 68 Tow hitch 69 Fire truck 70 Siren 71 Convoy 72 Emergency vehicle lighting 73 Agricultural machinery 74 Electric bicycle 75 Electric vehicle 76 Pedelec 77 Quadricycle 78 Microcar 79 All-terrain vehicle 80 Van 81 Recreational vehicle 82 Scooter 83 Trikke 84 Personal mobility device 85 Skateboard 86 Segway 87 Kick scooter 88 Roller skates 89 Mailman 90 Hitchhiker 91 Toddler 92 Child 93 Disability 94 Motorail 95 km/h 96 mph 97 Speedometer 98 Ride height 99 Dirt road 100 Driving ...