This type of sound tile is used at bus and tram stops to mark the end of the guiding strip or to mark a crossing. They are made of aluminium and are topped up with concrete; when tapped with the cane or foot, the sound box on the upper side produces a sound different from that of the surrounding pavement. This is especially useful for people with an impaired sense of touch who rely more on their hearing. In some Dutch municipalities, this type of sound tile is also used as a boarding marker.
The tiles have a coarse blister pattern and as a result are easily recognisable. For the sake of slip resistance the tiles are sandblasted. The anodising process makes the tiles corrosion-resistant, wear-resistant and gives them a silver/white colour.
Type: TGKTB-02 (cement-bedded) or TGKTB-07 (sand-bedded)
Dimensions: 30 x 30 x 2 cm (KTB-02) and 30 x 30 x 6.5 cm (KTB-07)
Material: aluminium, sandblasted and anodised
Colour: (matte) silver
Profile: 25 conical blisters in a straight pattern + 16 x anti-slip dot profiles between blisters
Base Ø: 25 mm
Top Ø: 15 mm
Height: 5 mm
Centre-to-centre dimension: 60 mm in straight pattern
Unique Selling Points