There is a practical limit to braking performance, set by the ability of the tyre contact patches to transmit the forces involved without sliding. However, advances in tyre design, soon to be complemented by the ability of electronically controlled braking systems to distribute effort according to wheel load, mean that limit is now potentially very high, at least on dry road surfaces. This is throwing the onus very much back on the braking system developers. In this interview, Matthew Beecham talked with Vince Austin, director, global braking systems for TRW, about foundation braking systems.