Like, why are they there?
2006-12-28 10:40:31 · 21 answers · asked by Anonymous in Cars & Transportation ➔ Safety
They are talking about Semi-Trailers. The brakes are really loud.
2006-12-28 10:43:51 · answer #1 · answered by ? 3 · 1⤊ 0⤋
That applies only to trucks exceeding a certain tonnage. Engine brakes are devices installed as part of a diesel engine which actually slows the vehicle by gradually reducing the engine speed without using wheel brakes. Truckers love it because it saves brake and tire wear and slows the truck safely. But the reason you see you those signs is because they are also very loud when they are used which is why towns don't like them.
2006-12-28 18:48:42 · answer #2 · answered by douglas l 5 · 1⤊ 0⤋
Jake braking or engine braking with a semi tractor is noisier than slowing sooner and using the wheel brakes. It's kinda' like downshifting in a car to slow down.
Semi truck engines do not act the same as a gasoline engine when you compression brake on a downshift. The device called a Jaob (jake) brake is a particular model of compression release device that uses a solenoid to open an additional exhaust valve to relieve engine compression and allow engine braking to occur. When one is applied, you definitely can tell.
2006-12-28 18:46:58 · answer #3 · answered by ©2009 7 · 1⤊ 0⤋
I'm a trucker with ten years of experience. RJ is an idiot that should be slapped unmercifully. There is never any reason to use an engine brake except to aid you in coming down a long hill or mountain, which is what they are designed for. If RJ needs them to avoid a ticket coming into a town on flat ground, he deserves a ticket, he was driving too fast to begin with. I'm betting RJ is one of those morons that come into the truckstop at 1 am waking everyone up with his jake brake he loves to hear so much.
Just about every truck built in the last 5 years has a muffler to quiet the jakes. I have driven 4 different trucks since 2001 and all of them had mufflers on them. You can't even tell the Jake is on. I have tested this many times by driving through these town with the "no jake brake" signs and turning them on in front of a cop. I have yet to have one even notice or turn his head in my direction. If you are hearing the jakes, either the truck is an older one or a moron like RJ removed the muffler because he likes to be heard.
2006-12-29 02:17:15 · answer #4 · answered by Anonymous · 0⤊ 2⤋
Engine brakes are loud. Engine braking uses the compression of the engine to slow down by doing this the driver saves wear and tear on the braking system of the semi, but the results are loud.
2006-12-28 18:49:40 · answer #5 · answered by trek988 2 · 1⤊ 0⤋
Engine brakes are used by big trucks. Sometimes, instead of using the brake pedal, they will shift the truck into a lower gear which slows down the truck. However, it is noisy and I think that's why they're discouraged from using it.
Engine brakes are also called "Jake Brakes".
2006-12-28 18:45:45 · answer #6 · answered by Wendy C 2 · 2⤊ 0⤋
They are for truckers.
Truckers will use there engine/transmission for "braking" by downshifting to a lower gear. If you've ever been next to an 18 wheeler that's been braking, you would know the noise.
It's a technique known as Jake braking. The signs are up to let truckers know that the residents do not want them to use Jake braking due to the excessive noise.
2006-12-28 18:42:49 · answer #7 · answered by hsueh010 7 · 4⤊ 0⤋
This is referring to 18 wheelers, which have what is called "jake brakes". They can actually use the engine to slow down the tractor and the trailer. The bad thing about "jakes" is that they cause the engine on the tractor to rev up, and this can get pretty loud. This is what I believe they are talking about. Have a nice day.
2006-12-28 18:45:50 · answer #8 · answered by cajunrescuemedic 6 · 3⤊ 0⤋
Bennie and Bumbles are on the money. It is a form of engine braking where you don't need to downshift, but reduce the compression in the cylinders to slow down. This results in extremely loud exhaust that no one but the trucker likes to hear. Therefore, it is banned in many towns and cities and should be banned in the vicinity of any housing regardless of being inside any corporation limits. We don't like hearing them in the countyside next to the interstate interchanges either.
2006-12-28 18:57:15 · answer #9 · answered by .40 Glock 3 · 1⤊ 0⤋
Trucks have many gears to speed up, but just like a manual transimission car, they can use the gears to slow the vehicle down. When am 18-wheeler uses his gears to slow the truck down, there is a huge amount of noise because the engine is reverse torqueing, meaning that the revs of the engine are slowing the truck down.
The same thing applies in hospital zones where they ask you not to use the horn on the vehicle.
It's just to keep the noise down.
2006-12-28 18:48:55 · answer #10 · answered by Paul J 3 · 0⤊ 0⤋
the engine brake is not the same as down shifting it is when the driver flips a switch that closes the intake and exhaust to use the engines compression to slow the truck and can be very loud and disturbing in residential areas
2006-12-28 18:51:16 · answer #11 · answered by randy c 2 · 1⤊ 0⤋