Short information about the speedstopper:
What is it for?
It is mainly intended to reduce the speed of traffic at temporary works at roads, especially at accidents.
How does it work?
The speedstopper takes about 15 seconds to deploy. It reduces traffic due to the illusion of a hard object on the road that might damage the vehicle.
Who is it for?
For everyone that temporary needs to be at roads, like firefighters, police officers, ambulance workers, tow truck operators, hunters, road construction workers etc.
Questions and answers about open entry courses:
Is it a hard speedbump?
No, the speedstopper works through the illusion of being a hard speedbump. The drivers slow down due to the risk of damage to their vehicle. When the drivers discover that the speedbump is soft, the speed is already lowered and the goal is achieved.
What happens if one driver knows it is a fake speedbump?
The traffic will probably be slow anyway. All vehicles have to slow down to the speed of the slowest vehicle passing the incident.
What happens if all the drivers know that it is a fake speedbump?
If this happens, which is unlikely, it is possible to have multiple designs to avoid that drivers learn how they look like. The design can also be changed to imitate existing hard speedbumps which makes it impossible to know the difference. Though it is very unlikely that drivers will take a chance that it is a fake speedbump and risk damaging their vehicle.
The current design is chosen for its effectiveness and to maintain a low price of production. To imitate existing hard speedbumps would greatly increase the price of the unit.
Is it a one time product?
No not at all, it will last for hundreds of incidents depending on how many cars that pass it.
How long will it last before it is destroyed?
I do not know, but it can take thousands of cars and heavy trucks passing it.
In this picture, an older version is shown which had reflective tape all over the sides. Heavy vehicles are no problem.
How long does it take to deploy?
If you have it in your hand it takes about 10 seconds.
Won't the speedstopper move out of position when it is so light?
No, the tire pinches the speedstopper to the ground so that it does not move when the vehicle passes. The tire does not have to climb an obstacle, which means that the force pushing the speedstopper forward is minimal.
It has also been tested on snow and ice with good results, but more tests needs to be performed next winter.
Is it possible to bowl it out, or do you have to roll it out?
The result is usually not great when it is bowled out like a bowling ball. It may end up on its side and twist around itself. The best option is to roll it out with your foot.
Is it wear and water resistant?
Yes, the product is made from durable polyurethane weave which can endure much wear and water. The closed cell foam inside can take both water and being compressed by large trucks many many times.
The most fragile part is the high visibility reflective material, despite being the best I have found. But the reflective parts can easily be replaced if worn out.
What does it weigh?
It weighs 2650 grams (5,84 lb).
How long is it?
The roll is in total 417 cm (164 in) long. But the actual soft bump is about 310 cm (122 in) long.
What do you do if it is too short?
It is designed for one traffic lane. But it is possible to position the speedstopper so that it partially covers two lanes. If that is not enough, more than one unit can be used together.
In the picture, an older version is shown which had reflective tape all over the sides.
Why are there holes on the sides?
That is where the air escapes and enters when it is used.
How fast does the foam inside expand?
The foam is usually fully expanded within a few seconds after the compression is released from the roll, or when a tire has compressed it. But if the roll has been stored for months, it might take a little longer.
Why not use a stronger foam inside?
With a stronger foam it will be harder to roll it back together and it will require more space to store it, which was a key factor when designing it.
How should it be cleaned?
If needed, flush it off with a normal garden hose. If the orange weave is very dirty, a mild brush and a mild car shampoo might be used to clean it. Let it dry before rolled together again.
Do not use high pressured water or air since the reflective tape might come off. Do not use a strong cleaning agent either.
What do you do if there is water inside the unit?
Use a car and drive slowly over the speedstopper from the short side, and push the water out towards the other side.
Who is the inventor?
Lars Axelsson is the inventor of the product.
Wetterskogs has been a great help in designing a working product.
Is the speedstopper patented?
The product is patent pending.
Where is it made?
The product is made in Karlstad, Sweden by Wetterskogs.