Mobile Speed Cameras in Australia

Mobile speed cameras are one of the most widely used speed enforcement tools in Australia. Unlike fixed cameras at permanent locations, mobile units operate from vehicles and can be deployed at different sites each day. This unpredictability is a deliberate road safety strategy — when drivers do not know where cameras will be, they are more likely to maintain safe speeds everywhere.

This guide covers how mobile cameras work, the different approaches taken by each state, whether they produce a visible flash, and answers to the questions drivers most commonly ask.

How Mobile Speed Cameras Work

Mobile speed cameras are operated from vehicles — most commonly unmarked sedans, SUVs, or vans — parked on the roadside. The camera equipment is mounted on the vehicle or on a tripod adjacent to it, directed at passing traffic.

The most common detection technology is lidar (light detection and ranging), also known as laser speed detection. The unit emits a narrow beam of infrared light towards the traffic stream. When the beam strikes a vehicle, the reflection is measured to calculate the vehicle's speed with high precision. Lidar is preferred because it can target individual vehicles even in dense, multi-lane traffic.

Some older mobile units use radar, which bounces radio waves off moving vehicles. Radar units are effective but can be less specific in multi-lane environments compared to lidar.

When a vehicle exceeding the speed limit is detected, the camera captures one or more photographs, recording the vehicle's number plate, the recorded speed, the speed limit, and the date and time. This data is later processed to generate an infringement notice.

Do Mobile Speed Cameras Flash?

This is one of the most frequently asked questions about mobile cameras. The answer depends on the equipment, the time of day, and the state:

  • During daylight: Most mobile cameras do not need a flash. Natural light is sufficient to capture clear photographs of the vehicle and number plate.
  • At night or in low light: Modern mobile cameras typically use infrared flash, which is invisible to the human eye. You will not see a flash.
  • Older equipment: Some older mobile camera units may still use a visible flash in low-light conditions.

In short, many drivers who are caught by a mobile speed camera never see a flash and are completely unaware until the notice arrives by post weeks later.

Published Locations and Schedules

State approaches to disclosing mobile camera locations vary significantly:

Queensland — Full Schedule Published

Queensland is unique in Australia — the Queensland Police Service publishes mobile speed camera locations in advance. Locations are typically made available on the QPS website and through local media. The rationale is that forewarning drivers about camera locations promotes voluntary speed compliance, even without the element of surprise.

New South Wales — Covert Operation

NSW operates mobile speed cameras covertly, without warning signs or advance publication. In 2020, NSW removed the requirement for warning signs on mobile camera vehicles, making them harder to identify. This approach is designed to create a general deterrent effect — if you cannot tell where a camera will be, you are more likely to drive within the limit everywhere.

Victoria — Mixed Approach

Victoria uses both marked and unmarked mobile camera vehicles. Some mobile units are clearly signed with “Speed Camera Vehicle” markings, while others are completely covert. Locations are not published in advance, but some mobile camera sites have small notification signs placed downstream of the camera.

Other States

South Australia, Western Australia, Tasmania, the ACT, and the Northern Territory do not publish mobile camera locations in advance. Most operate unmarked vehicles with no warning signs. The general philosophy across these jurisdictions is that unpredictability maximises the deterrent effect and encourages consistent safe driving.

For known mobile speed camera sites in each state, visit our mobile speed camera locations page.

Identifying a Mobile Speed Camera

Mobile speed cameras can be difficult to spot, which is by design. However, they typically share some common characteristics:

  • A vehicle (often a sedan, hatchback, or small SUV) parked on the roadside, in a median strip parking bay, or on a verge with good sight lines of approaching traffic.
  • A small camera unit visible through the rear window or mounted on a rooftop bar. Some units use a tripod positioned beside the vehicle.
  • The vehicle is usually stationary and may appear unoccupied, though an operator is often present inside.
  • In states where signage is required, small warning signs may be positioned before or after the camera location.

Regardless of whether you can identify a mobile camera, the safest approach is always to drive within the speed limit. Mobile cameras exist to save lives by reducing speeding across the road network.

Frequently Asked Questions

Do mobile speed cameras flash?
It depends on the equipment and conditions. Many modern mobile speed cameras use infrared flash that is invisible to the human eye, meaning you may not see a flash at all. In daylight conditions, no flash is typically needed. Older mobile units may use a visible flash, particularly at night. The absence of a flash does not mean you were not caught.
Can mobile speed cameras catch you from the front and rear?
Yes. Depending on the setup and the state, mobile speed cameras can be configured to detect and photograph vehicles approaching from the front, the rear, or both directions. Many modern units capture both front and rear images for more reliable identification. The camera operator positions the vehicle to maximise coverage of the traffic stream.
How far away can a mobile speed camera detect you?
There is no single detection distance for every mobile setup. Range depends on the approved device, line of sight, lane geometry, weather and operating configuration. A driver cannot reliably determine from visual distance alone whether a valid measurement was taken; the device and evidence identified on an issued notice are what matter.
Are mobile speed cameras legal?
Yes, mobile speed cameras are fully legal in all Australian states and territories. They are authorised under state traffic and road safety legislation. Camera operators are trained and certified, and the equipment is regularly calibrated and tested to meet accuracy standards. The use of mobile cameras is supported by evidence showing they reduce road trauma.
Can I see the mobile speed camera schedule for my state?
Queensland is the only state that publishes mobile speed camera schedules in advance. In most other states, the locations of mobile cameras are not disclosed beforehand. This is a deliberate enforcement strategy — the uncertainty about mobile camera locations encourages drivers to maintain safe speeds everywhere, not just at known camera sites.
How are mobile camera sites chosen?
Mobile speed camera locations are selected based on crash data, traffic volume, speed surveys, community complaints, and road safety risk assessments. Sites with a history of speed-related crashes or known speeding problems are prioritised. The selection process is managed by each state's transport or police agency and is reviewed regularly to ensure cameras are deployed where they have the greatest safety benefit.