Tyres that warn cars about the road

The Witness - Wheels - - MOTORING - — Wheels Re­porter.

BRIDGE­STONE has an­nounced the sec­ond version of its Con­tact Area In­for­ma­tion Sens­ing ( CAIS) sys­tem is fi­nally ready for com­mer­cial ap­pli­ca­tion.

Bridge­stone un­veiled the first version of its CAIS tech­nol­ogy at the Frank­furt Auto Show in 2011. Four years ago, the sys­tem re­lied on a strain sen­sor to cal­cu­late the load and side forces act­ing on the side­walls of the tyre.

CAIS 2 fol­lowed in 2012 with an ac­cel­er­a­tion sen­sor that added road sur­face mon­i­tor­ing to the mix, and last year CAIS 3 in­tro­duced a sen­sors that could also mon­i­tor the rub­ber left on the tyre.

All the sys­tems use Bridge­stone’s pro­pri­etary elec­tro­mag­netic gen­er­a­tor, so there is no need to change bat­ter­ies.

Bridge­stone said CAIS 2 is now ready to be in­stalled in cars and trucks.

The sen­sors in CAIS 2 mon­i­tors high fre­quency vi­bra­tions of the tyre and trans­mit th­ese wire­lessly to a cen­tral mod­ule housed in­side the car that tells all ve­hi­cles in the area with Bridge­stone tyres equipped with CAIS 2 what the road sur­face is like.

The com­pany also plans to sell its CAIS 3 sys­tem in the near fu­ture, which will see the world’s first tyres that can tell driv­ers ev­ery as­pect of the tyre’s in­ter­ac­tion with the road, from the air pres­sure and tread depth to road con­di­tions.

PHOTO: SUP­PLIED

The lat­est tyres will in­form driv­ers about ev­ery as­pect of the tyre’s in­ter­ac­tion with the road, from the air pres­sure and tread depth to road con­di­tions.

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