Two criteria must be considered for the implementation of speed bumps on roads: location and limitations.
The purpose of speed bumps is to reduce the speed of vehicles, a speed that should have already been reduced previously with signs, roundabouts, etc.
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Regarding their location, it should be noted that they are usually located at the beginning of a crossing or section. If you want to put consecutive reducers, the distance between them should range between 50 and 200 meters, although it is advisable not to exceed 150 meters.
There are several limitations when it comes to placing speed reducers:
- In-network sections that are not considered crossing.
- In the first 50 meters from the beginning of the crossing, when there is no entrance door.
- On crossings whose length is less than 200 meters.
- At points where the V85 exceeds 60km / h.
- In bridges or tunnels or other singular masonry works, and the previous or subsequent 25 meters.
- In the crossing segments with an incline greater than 5 percent.
- In the crossing segments, there’re two traffic lanes unless there’s a non-passable partition separating the ways.
- In segments of crossings having an IMD greater to 5000 vh or the highest hourly intensity over notable than 300 vh.
- At the cross-country segments having heavy vehicles’ IMD more notable than 300 vh.
Donkey-type reducers aren’t to be placed close to intersections therefore that pedestrians don’t understand them as crosswalks.
When Cross Alert Bands are Used?
And when they are used? The motive behind their placement, as we’ve mentioned, is for conveying to the chauffer of the vehicle they should to be very careful since they might be nearing a segment where a greater road risk is there.