Concrete Warning and Guiding Blocks

We manufacture a wide Range of Concrete Warning and Guiding Blocks

Gimi Access manufactures a range of different sized, slip-resistant Concrete Warning and Guiding Blocks, designed and produced in accordance with SANS 784:2008. Our range of concrete Tactiles are hard-wearing and offers the durability required for outdoor use.

Gimi Access' Concrete Warning and Guiding Blocks are available in the following sizes and colours:


400mm x 400mm x 65mm (base)

400mm x 400mm x 75mm (base)

300mm x 300mm x 65mm (base)

300mm x 300mm x 30mm (base)



Grey, Yellow, Terracotta, Charcoal

Tactile Ground Surface Indicators (TGSIs), also known as Tactiles or Bubble blocks, are blocks with small extrusions or raised tactile nodules with an embossed profile that translate into information and guidance to people that are blind or partially sighted, underfoot or by using a cane. In aiding orientation, TGSIs provide safe, dignified and independent access to public transport and urban areas to all people. 

In South Africa, when combined with other environmental information, direction and orientation is provided on the safe crossing of the road, presence of, for example, stairs, ramps, train platform edges, bus stops, BRT stations etc.

Physical detection, as well as the luminance contrast between the Tactiles and the surrounding surface, is key.

There are two kinds of Tactile Ground Surface Indicators specified in South Africa:

1. Warning Tactiles

Warning Tactiles, or Hazard Tactiles, have round protruding nodules and are used to warn pedestrians with special needs, such as the blind and partially sighted, of an approaching hazard, like stairs, a ramp, platform edge, sidewalk or pedestrian crossing over a road. Warning Tactiles can also be placed at decision points or direction changes, when combined with a guidance route.

Warning Indicators are designed to function much like a stop sign. When a person reaches an area with Warning Tactiles they know that there is a hazard in their line of travel, which allows them to slow down and determine the nature of the hazard before proceeding.

2. Guidance Tactiles

Guidance Tactiles, also known as Directional Tactiles or Leading Tactiles, are placed at the back of the warning block sections at pedestrian crossings. They are there to direct the user to the crossing point. Guidance Tactiles can also be used for guiding a person along a route over open spaces where it is difficult to navigate.

Guidance Tactiles consist of a series of parallel raised bars, oriented in line with the prescribed direction of travel.  They are installed to safely lead pedestrians along a pathway that is free of obstacles. Guidance Tactiles will often end where Warning Tactile Indicators begin.

Do you need industry-approved TGSI products?  Contact us today - we can even customise Tactile products to your project requirements, while staying within the required specifications.