Traffic Loop Detector
                     Traffic Loop Detector
LOS ANGELES SIGNAL CONSTRUCTION, INC.
 A traffic loop detector is buried in the pavement at an intersection (you 
can often see rectangular cuts in the road). When metal is placed on 
the vehicle, the loop will electromagnetically trigger the signal.
 In order to operate properly, the loop detector requires ideal placement. 
This is important for the safety of motorists and for optimum traffic 
light function.
Durability
 Traffic Loop Detector is a long length of wire that has a repetitive pattern that 
can detect the presence of vehicles. It has been the workhorse of the signal 
industry for years due to its relatively low initial installation cost.
 It has become a standard for vehicle detection in parking lots, and car park boom 
gate systems. A circular cut is made in the road surface and wire is wrapped 
around it. When a vehicle drives over the loop it disturbs the magnetic field and 
tells the intersection controller there are cars waiting to go through the red light.
 It is not as prone to false triggers as other traffic sensors. This is especially 
important when it comes to scooters, motorcycles and bicycles stopped at a 
traffic signal on fixed-time cycles. They can easily pass over the loop without 
triggering it because they do not have the mass of larger metal vehicles. This can 
result in unnecessary signal delays.
Reliability
 A traffic loop detector is a very reliable device. In the automated gate industry 
we use them to trigger gates for access and egress. The vehicle detection loops 
are made up of a continuous length of wire that repeats at a set frequency. 
When something big and metal rolls over the loop it changes the frequency and 
the loop detector detects this change and sends a signal to the controller.
 Detectors like these are also used at intersections and on motorways to extend 
green lights. When something passes over the detector it disturbs the magnetic 
field and signals the intersection controller there are cars waiting to pass. 
Traffic loop detectors are not the only way to detect vehicles, passive infrared, 
ultrasonic and acoustic can all be used for vehicle count, presence, or lane 
occupancy. These sensors all operate differently but they are all just as reliable 
as a traffic loop detector.
Installation
 If you've ever driven into an intersection and the traffic light is telling you to wait, 
there may be several reasons why. Perhaps the pedestrian pushbuttons are faulty, 
or maybe the signal controller isn't properly programmed. But, one of the most 
common culprits is a faulty loop detector.
 A traffic loop detector is a sensor used to detect vehicular traffic and trigger 
automated gates to open. You've probably traveled over thousands of them without 
even realizing it.
 A loop detector consists of wire "coiled" into a square, circle or rectangle shape 
that's installed in the road surface and works like a metal detector. When a car 
drives over the loop, it creates a magnetic field that tells the controller there is a 
vehicle in the intersection. Unlike telecoils, which pick up audio frequencies, loop 
sensors are specifically designed to detect vehicles and only vehicles. They are 
considered the most reliable vehicle detection method available.
Maintenance
 Traffic Loop Installation are the most popular kind of traffic sensor used to trigger 
traffic lights. They are easy to install and operate, reliable and long-lasting and 
automate a large majority of vehicle detection.
 However, the quality of these sensors can be affected by a variety of factors like sun 
glare, fog or temperature. These factors can cause vehicles to be incorrectly classified 
and result in the signal turning red even though no cars are present.
 Fortunately, there are some great solutions for this problem that can solve these 
issues and improve the overall performance of your loop detectors.
 One option is to switch over to a more advanced system like video detection. This is 
an excellent alternative that uses cameras to see what is happening at the 
intersection in real time. This allows the system to better understand demand and run 
a more efficient light cycle. This can save a huge amount of money on electricity and 
time.
Thank You 
 Address: 155 N Eucla Ave, San Dimas, CA 91773
 Email: [email protected]
 Number: (800) 828 8180
 Website: https://lasignal.com