Where pedestrians walk. Where the apartment knows. Or where I want to make sure that the idioms do not exceed the maximum allowed speed. These are all cities where retarders grow up.
Their goal is clear: to increase the safety of the unpleasant traffic, especially pedestrians and cyclists.
If the retarders are located, the minimum ramps must be color-coded, the road signs must be alerted to the thresholds and must be suitably lit so that they are visible even in the dark.
The deceleration thresholds fall into 3 categories: mole, long and polte.
Have a lute color. Their age ranges from 3 to 8 centimeters badly at the maximum allowed speed in a given cut. m no speed, tm you prh.
Mole retarder prh
It is important that there is a gap between the end of the threshold and the curb, namely a piblin in the length of 50 centimeters and one meter, according to the Ministry of Transport Tom Lukak.
The gap has two effects. First, I can allow cyclists to drive without a royalty to retard. And secondly, there may be free space there due to the drainage road. So that the retarder does not form a barrel, when the water and water flowed sideways into the inlets.
They most often have a trapezoidal shape. You can also meet the so-called steps, or steps up long thresholds. And there is a jet tet shape that goes to the circles.
They only serve as slows, but they often have pedestrian walkways painted on them.
Long retarder prh
We can often see a paved road in the vicinity of these retards. Some cars cut the chassis here, sometimes even get an oil pan. For example, on Koterovsk Street in Pilsen near the tram stop.
This applies especially to the car, which, through the tuning rights, especially the ones, dreamed of the light age of the car. And, of course, these retarder thresholds are not adapted to that, Lukak speaks.
Cars that have a low chassis even without rights often get rid of the bag. At the same time, retarders should be built in such a way that the dog can be driven without a car. Prague is generally designed so that it is possible to drive at the maximum allowed speed, which is in the city, you can talk.
Very bad on the slope of the ramp. In the cut, where you can go with a maximum point, the slope must be at most 6 degrees. Two degrees on the pole and 1.5 degrees on the pole.
For example, in Robrov Street in Prague 3, where a parachute is allowed, but we did not have 9 degrees.
Where buses run, the bag should be jet men. According to Technical Conditions clause 85, which sets out all the rules for the deceleration threshold, it should not tend to exceed 3 degrees.
An alternative to long thresholds are polts. Place them especially where the buses and buses run. Public transport vehicles, unlike passenger cars, have wheels far apart, so if the bus driver is handy, I can cross the car so that it doesn’t even matter.
Retarder threshold called polt
The poles are either plastic or stack them, for example, from paving stones. The slope of the bonch nbh me init a maximum of 14 degrees, the height ranges from 3 to 10 centimeters.
It is essential that these poles be located so that the driver of a car is forced to drive on at least one wheel, according to the Ministry of Transport Tom Lukak.
There are jet small polka poles that have a yellow color. Depending on the maximum permitted speed in a given cut, the height can be as high as three centimeters.
As a rule, one bay was omitted in each direction due to bicycles and cyclists.
Negative deceleration thresholds
In addition to a number of positives, especially the protection of life, the thresholds have a number of negatives. In the Technical Conditions, among other things, the noise will disappear when the retarder drives the car. According to you, these are emissions, as the vehicles have to start again after slowing down.
The negative ones include problems with drainage roads, especially road scrubbing, when these pits are on them, the road surface around the threshold is more worn and, last but not least, it is a pitch for cyclists.
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