The barriers deflect noise from adjoining urban areas and can be made from relatively light and inexpensive materials such as timber, fibro-cement sheet, or Perspex
An effective barrier needs to be long enough and high enough to deflect noise from the area that is to be protected
How long should a noise barrier be?
The length of the noise barrier must be long enough to cover an angle of at least 160° from the receiver
Alternatively, the distance between the receiver and the barrier end should be at least four times the perpendicular distance from the receiver to the barrier; The most effective barriers are solid and continuous
What are the different types of noise barrier?
In CEDR Member States, concrete, wood and aluminium are the most prevalent barrier types ( Bendtsen et al
, 2010 )
The choice of barrier material should consider the local environs
Another common type of noise barrier is an earth berm, which is a mound of earth along the road
Auto engineering noise barrier
Barrier installed within medians of and next to roads to prevent vehicle collisions
Traffic barriers keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains, or from traversing steep (non-recoverable) slopes or entering deep water. They are also installed within medians of divided highways to prevent errant vehicles from entering the opposing carriageway of traffic and help to reduce head-on collisions. Some of these barriers, designed to be struck from either side, are called median barriers. Traffic barriers can also be used to protect vulnerable areas like school yards, pedestrian zones, and fuel tanks from errant vehicles.
Traffic barriers keep vehicles within their roadway and prevent them from
Barrier installed within medians of and next to roads to prevent vehicle collisions
Traffic barriers keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains, or from traversing steep (non-recoverable) slopes or entering deep water. They are also installed within medians of divided highways to prevent errant vehicles from entering the opposing carriageway of traffic and help to reduce head-on collisions. Some of these barriers, designed to be struck from either side, are called median barriers. Traffic barriers can also be used to protect vulnerable areas like school yards, pedestrian zones, and fuel tanks from errant vehicles.
