Radar Detectors & Laser (SpeedSafe)
Speed Cameras - Fixed
Speed Cameras are 24 / 7 / 365 tax machines. In some locations, just 3 KPH over the posted speed limit will earn a fine. That's a slow walking pace! Supposedly, a leisurely stroll above the speed limit will go from safe to dangerous, even at 2 o'clock in the morning with not another car in sight. Meanwhile: unskilled, incompetent drivers in unsafe cars rule the roads causing crashes--without speeding?
Some "fixed" speed cameras do not use radar or laser technology. Instead, they calculate speeds by measuring the time a vehicle takes to pass between two locations that are close together. Inductive loops or piezo strips are imbedded under the road surface. A computer linked to the sensors triggers a camera when a vehicle exceeds the speed limit.
How fixed speed-cameras work
FIXED Speed Camera Types
Fixed - Sensor Speed Cameras: Speed Cameras that employ sensors to effect the speed measuring process do not transmit a beam. Therefore, they cannot be detected by Radar Detectors. However GPS technology permits a driver to anticipate a "sensor-type" speed camera ahead on the road. Speed-camera locations (GPS coordinates) are held in a database thereby permitting an alert in advance of where a speed reading is taken.

Fixed - Radar Speed Cameras: RADAR based Speed Cameras are of two types:

1. Pole-mounted "slant" Radar angles a narrow beam across the road at approximately 20 degrees from parallel.
The speed measurement is made after a vehicle passes the radar location and the rear license plate is photographed.

2. Overhead "down-the-road" Radar projects a very narrow beam in each lane. The speed measurement is made after a vehicle passes the location and the rear license plate is photographed.

Fixed "radar" speed camera - Pole Fixed "radar" camera - Overhead Gatso parabolic speed radar
Speed Camera - Pole Speed Camera - Overhead Gatso Parabolic RADAR
Gatso's parabolic pencil-beam radar is for overhead gantry installations.
Fixed - Laser (scanning) Speed Cameras: The German Vitronic Poli-Scan SPEED uses "scanning laser" technology to measure the speeds of all vehicles visible in its tracking zone. Multiple cars and trucks can be detected and measured concurrently. The measured speeds of infringing vehicles are attributed to the correct vehicle, even where multiple vehicles are traveling side by side. Poli-Scan SPEED can take accurate measurements at road works, in bends, tunnels and road sections with poor visibility. Three lanes can be monitored in each direction from the median strip.
Scan road - Poliscan
Fixed "scanning laser" speed camera
The fixed version of the Poli-Scan SPEED enforcement system measures multiple vehicles traveling adjacent to each other and clearly attributes measurements to specific vehicles, and creates digital incident records.
Either one (1) or two (2) measurement / documentation units mounted within a single pillar measure the speed of vehicles in both directions of travel – without any in-road equipment such as loops or piezo sensors. The pillar is comprised of several segments which can be independently assembled and aligned. This concept enables each measurement / documentation unit to be rotated freely during commissioning of a site prior to fixing. Measurement / documentation units are removable and can be relocated to other pillars.
With its sleek, minimalist design, the fixed (tower) version of the Vitronic Poliscan Speed does not look like a speed camera.
Vitronic Fixed Speed Camera

Fixed - Point-to-Point Speed Cameras: Speed Cameras that measure vehicle speeds over long distances are becoming more numerous across Australia.

The camera systems use in-road sensors, such as piezo strips to activate the camera.

Point-to-point speed cameras take a set of digital images of a vehicle; then calculate the average speed by determining the time taken to travel from one point to the next. If the calculated average speed exceeds the speed limit, the incident is accepted and sent for verification. A ticket can then be issued.

Point-to-point Speed Camera
An inexpensive way to avoid being ticketed by Fixed Speed Cameras is the Cheetah GPS Fixed Camera Detector.

Using GPS technology, Cheetah c550 alerts you with audible and visual alerts to high risk accident areas (black spots) and photo-enforcement fixed cameras.
All four (4) Camera types: 1.Sensors 2.Radar 3.Laser 4.Point-to-point.

Clear "voice alerts" provide useful and accurate information about potential threats and hazards.

There's an option to enable alerts for well known speed trap sites, and you can even mark up to 64 locations for your own personal reminders.
Cheetah c550