Braking a vehicle using a non-newtonian fluid

A pneumatic braking arrangement for a vehicle comprising:

• a source of pressurized air;
• a parking brake comprising a spring, wherein the parking brake is operative to brake the vehicle based on a compression state of the spring, and wherein the pneumatic braking arrangement is configured to control the compression state of the spring based on a first air pressure supplied from the source of pressurized air;
• a piston and a chamber, wherein the piston is moveable within the chamber and wherein the chamber contains a Non-Newtonian Fluid (NNF);
• a brake valve operative to push the piston into the NNF in response to a brake request applied to the brake valve;
• and
• a control valve operative to control the first air pressure, wherein the control valve is fluidly connected with the chamber, and wherein the control valve is configured to release the first air pressure from the source of pressurized air dependent on a first force applied by the NNF to the control valve.