Warning tactile surface

Tactile pavements are textured surfaces with contrasted colour that are perceptible and identifiable by feel or cane or residual functional vision that warns or informs people with visual disabilities.


Tactile pavements shall have a reflectance contrast with the surrounding pavement of at least 50 points LRV and the height or depth of this pavement cannot be greater than 4 mm.

 

Tactile pavements must be installed according to the following criteria:

 

1. Detectable warning surface: used as a warning of upcoming level changes or
obstacles on the course of travel. Warning pavement shall be constructed of
truncated cones arranged in a square grid or diagonal rows and installed with bands
oriented in the crosswise direction of the course of travel. It must be installed along
the entire width of the element and not less than 300 mm from the beginning of the dangerous element. The warning surface shall have a width between 300 mm and 400m. The most common elements where warnings are required include stairs, ramps, rail and port platform borders, and unprotected changes in level among others.

 

2. Tactile guiding surfaces: this element is used as a directional sign to assist the
independent mobility of people with visual disabilities. Guiding patterns should be
constructed of flat-topped elongated bars. Bars must be oriented in the direction of
the course of travel.

 

The tactile guiding surface shall have a minimum width of 400 mm. The distance among longitudinal stripes can’t exceed 32 mm.

LCWT1
LCWT1
LCWT2
LCWT2

LCWT1

Available in the beginning and end of every level change including ramps and stair landings, or any dangerous element

LCWT2

Installed along the entire width of the element

LCWT1
LCWT1
LCWT1
LCWT2
LCWT2
LCWT2

LCWT1

Available in the beginning and end of every level change including ramps and stair landings, or any dangerous element

LCWT2

Installed along the entire width of the element

LCWT3
LCWT4

LCWT3

The width ≥300mm

LCWT4

Located at 300mm away from the edge of the ramp or stair fight or any dangerous element

LCWT5
LCWT6

LCWT5

Warning tactile truncated cones diameter = 30mm at bottom and 20mm at top, and protruding 4mm

LCWT6

Non glare on shiny or slippery

Glossary of Terms

Tactile pavements are textured surfaces with contrasted colour that are perceptible and identifiable by feel or cane or residual functional vision that warns or informs people with visual disabilities.

Truncated domes in a grid pattern to provide a tactile surface under feet of blind users. They are used as a used as a warning of upcoming level changes or obstacles on the course of travel.

Flat topped elongated bars in the paving surface under feet of blind people. They are used as a directional sign to assist the independent mobility of people with visual disabilities.

Pendulum test value (PTV) is a measurement of the slip resistance of a floor surface, either an external or internal floor of a building. The least slip resistance a surface material is, the more likely people may skid or trip, especially in wet conditions. In average circumstances, slip-resistance is as follows:

0-18 = very low slip-resistance.

18-25 = moderate slip-resistance.

25-36 = good slip resistance.

Light Reflectance Value (LRV) is a numeric scale that is used to identify how much light a colour reflects or absorbs. It is used in universal design to identify the contrast between two colours. This can help to determine if there is sufficient contrast to visually identify a feature such as a fonts on a sign, elevator call button, a handrail and other items which need to be seen by visually impaired people.

Tools and Templates

Ramp Design
Building Entrances
Car Park Layout

Relevant Guidance