Dubai says, smile for the radar
November 20th, 2008This post cannot be re-published or re-printed without the consent of the owner. The information is provided solely for the purpose of public and safety and cannot be treated as a means to alter violations. Please respect the UAE traffic law and abide by it.
The traffic violations in Dubai and other emirates has seen a rise in the past few years. People from different traffic backgrounds with a different opinion and traffic habit drive here. This means there should come a day when the authorities have to take a stand against violators and safeguard the other drivers from falling into the pit-hole of death. Throughout the UAE, a total of 2,056 people died in road accidents between January and June, an increase of 20 per cent on the previous year. And just in Dubai a total of 1,314 accidents occurred between January and June.
Looking at the growing rates of traffic congestion and road rage in the UAE, the government has decided to implement harsh traffic laws on anyone who does not abide by the rules (I should know better :)). They have re-stated the traffic laws, fines and introduced the “Black Points System“. Though after the new traffic law being passed in Dubai, the accident rates have gone down, and the fines issued were sufficient to build an Atlantis on Honolulu. The most scary part of this entire scenario are the new radars installed (see picture below)
Looks familiar ? Well this would be the dreaded “Laser Radar” or simply called the LIDAR (Light Detection And Ranging). In comparison with the ancient “Photo Radar” the laser radar is like it’s big brother on steroids.
Here’s a little overview on how a traditional radar works, so you get an idea.
Radar is the use of radio waves to detect and monitor various objects. The simplest function of radar is to tell you how far away an object is. To do this, the radar device emits a concentrated radio wave and listens for any echo. If there is an object in the path of the radio wave, it will reflect some of the electromagnetic energy, and the radio wave will bounce back to the radar device. Radio waves move through the air at a constant speed (the speed of light), so the radar device can calculate how far away the object is based on how long it takes the radio signal to return.
Radar can also be used to measure the speed of an object, due to a phenomenon called Doppler shift. Like sound waves, radio waves have a certain frequency, the number of oscillations per unit of time. When the radar and the car are both standing still, the echo will have the same wave frequency as the original signal. Each part of the signal is reflected when it reaches the car, mirroring the original signal exactly. But when the car is moving, each part of the radio signal is reflected at a different point in space, which changes the wave pattern.
Now since we have an idea on how the traditional radar works, lets see how the LIDAR works.
Laser (or lidar, for light detection and ranging) Radars use a more direct method that relies on the reflection time of light rather than Doppler shift. The Doppler shift method is no quiet reliable as sound travels at something like 1,000 feet (300 meters) per second, so it creates a very apparent round-trip time for the sound.
A laser radar measures the round-trip time for light to reach a car and reflect back. Light from a laser radar moves a lot faster than sound — about 984,000,000 feet per second (300,000,000 meters), or roughly 1 foot (30 cm) per nanosecond. A laser radar shoots a very short burst of infrared laser light and then waits for it to reflect off the vehicle. The gun counts the number of nanoseconds it takes for the round trip, and by dividing by 2 it can calculate the distance to the car. If the gun takes 1,000 samples per second, it can compare the change in distance between samples and calculate the speed of the car. By taking several hundred samples over the course of a third of a second or so, the accuracy can be very high.
The advantage of a laser radar is that the size of the “cone” of light that the radar emits is very small, even at a range like 1,000 feet (300 meters). The cone at this distance might be 3 feet (1 meter) in diameter. This allows the radar to target a specific vehicle. The disadvantage is that the radar has to be properly aimed at the road/vehicle
Since the comparison between the two radars is clear, lets see the new radars that have been installed. They are called the Speed Safety System (SSS), by a Swedish company called Sensys. These are the latest in traffic control technology and possess a high rate of detection, say 99.99% ? The 1% is due to climate and road conditions. So now you might see how serious the Dubai Police is ?
Each of these units, by estimate cost around 100,000 - 250,000 Dhs (please do correct me if i am wrong). So when you say that the government earns the money from your fines, they are actually using it to keep the roads safe. I am scared and angry as much as you are, so don’t get me wrong, but to think that your life could end in just 5 seconds of a disastrous collision because some inexperienced driver was traveling at the speed of 220 Km/hr on emirates road, is just something to reconsider and think about.
The SSS operates from the side of the road, tracking traffic for speed and distance. For stationary use, the system is installed in a cabinet mounted on a pole. The cabinets are made for all weather conditions. Tracking starts at 150 - 200 meters and vehicles exceeding the speed limit, triggers the system at a set report line. A picture is taken of the violating vehicle and stored with time, date, speed and location embedded in the file.
Properties
- High-resolution digital images
- Continuous speed verification by applying two independent methods
- Number plate and/or driver identification
- Secure remote communication and setup
- Local storage capacity of up to 400,000 images (optional)
- Provides information about time, date, location, vehicle speed, speed limit
- Supports front or rear photography, or both simultaneously
- Non-intrusive technology, no devices buried in the road surface
- Uses Sensys’ unique multi-tracking radar RS240
- Tracks and measures each vehicle more than 20 times per second
- Triggers at an adjustable speed limit and report line
- Scheduled functionality (only enforced during specified hours and days)
- Possible to take one or two images of the offense
Some of the few options mentioned
- The alarm becomes activated should someone try to sabotage or break into the cabinet. Units that may be connected to the alarm system include door switches, tilt and vibration
sensor, smoke/fire detector and voltage sensor. - A video sequence is added to the evidence package as supplementary evidence to the high-resolution still image.
- The incident detection system transmits an alarm should the traffic flow change, such as when a queue forms in a lane. It also detects vehicles stopping on the hard shoulder, and will notify the traffic control room.
- The unique feature of Sensys’ radar of being able to discern distance is used to detect a vehicle passing the stop bar during the red-light phase.
So basically, you cannot fool or avoid the system, which in a way is good. But the traffic congestion problems keep growing and road rage becomes our only option. Hopefully Dubai police would deploy more officers on important roads over the emirates to heavily fine violators who cut through lanes, block traffic and drive on through the hard shoulder. Want to avoid getting snapped by these babies ? Then read on …
- Avoid driving fast & break up near radar points, It will track you approx. 150 m to 200m away.
- Avoid boosting the speed after the radar points, it will track the average distance between two control points ( two nearest radars)
- Please follow the rules while line changing, Can be tracked
- Don’t use mobile phones while driving, Can be tracked
- Use seat belts always, Can be tracked
- Follow the lane discipline for heavy vehicles, Can be tracked
- Always keep the safe distance, Can be tracked
- Avoid jumping lanes, crossing yellows, Can be tracked
Drive safely and obey the traffic laws !







