Street Lights SENSORS

[Elliott]

I Hate to Bring this up i Know it's Old But We All still should talk more
about these Ground Sensors

So we know there not weight on all of Them

Most of the Time There Circles with 4 Cut Lines

Im gonna Try Contacting the City on them

More Research is Still Needed!!! :confused:

[XPS1210]

I have found...

If you approach the light dead center in the middle on the lane (to include drive thru resteraunts), then it will pick the scooter up... However if your 2 inches or so off... It won't know your there...

I usually stop 3 feet from the stop line and SLOWLY inch forward till it trips the light...

Have only found 1 light I couldn't get to trip this way...

Hope this helps....

[King Vino]

Well for starters there are several types of sensors-devices all look the same from the ground.

Timed lights, weight sensitive, and metal detection. The first and last there's not much you can do for them. Those metal underside kits that are said to trip them, are 50/50 sometimes they work and sometime they don't. It's a matter of calibration. More often than not they don't work.

For the weight sensitive ones, I roll up on to the pad, and bounce once on the saddle, usually the combined weight of myself and the scooter and the bounce trips it most every time. They are often set for 500lbs.

[crxallwayswins]

i don't know what states everybody lives in here but i live in florida and we have camera's at like every light and it aims at you if your in the turning lane or in the straight lane there are a few lights that don't have those camera's yet but other than that i never have a problom. but get this on my girlfriend's cbr f4i i can't get the damn things to change even though the bike is like 300 pounds heavier.
chris :confused:

[King Vino]

Those are red light cameras they do not control traffic intersections. They only trip if you drive past the stop line and enter the intersection if the light is red. I believe they use a motion sensor, but some may be weigh tripped. I'm going to look at Federal Signal Corp web page now to gather more info.

[King Vino]

Ok, here's some info. I didn't go to the actual manufacturer's web pages. This site seems to prefer talking about induction or metal sensors. Maryland we use weighed sensors or air tube as they call it on their site. I thought this as a rather fascinating topic so I decided to snoop a little bit more.

LOOK HERE (http://auto.howstuffworks.com/red-light-camera6.htm)

Some lights don't have any sort of detectors. For example, in a large city, the traffic lights may simply operate on timers -- no matter what time of day it is, there is going to be a lot of traffic. In the suburbs and on country roads, however, detectors are common. They may detect when a car arrives at an intersection, when too many cars are stacked up at an intersection (to control the length of the light), or when cars have entered a turn lane (in order to activate the arrow light).

There are all sorts of technologies for detecting cars -- everything from lasers to rubber hoses filled with air! By far the most common technique is the inductive loop. An inductive loop is simply a coil of wire embedded in the road's surface. To install the loop, they lay the asphalt and then come back and cut a groove in the asphalt with a saw. The wire is placed in the groove and sealed with a rubbery compound. You can often see these big rectangular loops cut in the pavement because the compound is obvious.

Inductive loops work by detecting a change of inductance. To understand the process, let's first look at what inductance is. This figure is helpful:

What you see here is a battery, a light bulb, a coil of wire around a piece of iron (yellow), and a switch. The coil of wire is an inductor. If you have read How Electromagnets Work, you will also recognize that the inductor is an electromagnet.

If you were to take the inductor out of this circuit, then what you have is a normal flashlight. You close the switch and the bulb lights up. With the inductor in the circuit as shown, the behavior is completely different. The light bulb is a resistor (the resistance creates heat to make the filament in the bulb glow). The wire in the coil has much lower resistance (it's just wire), so what you would expect when you turn on the switch is for the bulb to glow very dimly. Most of the current should follow the low-resistance path through the loop. What happens instead is that when you close the switch, the bulb burns brightly and then gets dimmer. When you open the switch, the bulb burns very brightly and then quickly goes out.

The reason for this strange behavior is the inductor. When current first starts flowing in the coil, the coil wants to build up a magnetic field. While the field is building, the coil inhibits the flow of current. Once the field is built, then current can flow normally through the wire. When the switch gets opened, the magnetic field around the coil keeps current flowing in the coil until the field collapses. This current keeps the bulb lit for a period of time even though the switch is open.

The capacity of an inductor is controlled by two factors:

The number of coils
The material that the coils are wrapped around (the core)
Putting iron in the core of an inductor gives it much more inductance than air or any other non-magnetic core would. There are devices that can measure the inductance of a coil, and the standard unit of measure is the henry.

So... Let's say you take a coil of wire perhaps 5 feet in diameter, containing five or six loops of wire. You cut some grooves in a road and place the coil in the grooves. You attach an inductance meter to the coil and see what the inductance of the coil is. Now you park a car over the coil and check the inductance again. The inductance will be much larger because of the large steel object positioned in the loop's magnetic field. The car parked over the coil is acting like the core of the inductor, and its presence changes the inductance of the coil.

A traffic light sensor uses the loop in that same way. It constantly tests the inductance of the loop in the road, and when the inductance rises, it knows there is a car waiting!

[Elliott]

That good looking out King Vino i found some imformation as well

will be Posting it Soon!! :) Pictures are Posted SOON! :) :)

[King Vino]

...still waiting Elliott.

[hybridrazz]

more great tips king vino thanks.

[Snyeed]

All i do is put my scooter on the stand, run and push the crosswalk button. It works everytime.

[hybridrazz]

lol good one syneed.