ESP and Traction Control
The Crossfire is equipped with Emergency Brake Assist, 4 Wheel Anti-lock Brakes, All-Speed Traction Control, Electronic Throttle Control, and Electronic Stabilty Program. These systems build upon each other sequentially to give the driver enhanced dynamic control in low grip situations (and over the limit high grip ones too!)
ESP and ARS (traction control) are two independent systems which sometimes interact given the situation. The traction control will sense wheel slip on either rear wheel and will retard the throttle (electronically) until the tires regain traction. With ESP switched on, the yellow light will blink during the activation of the system. When the "ESP Off" switch is engaged, the yellow light is constantly on and traction control will be switched off up to around 40 mph. It will then reactivate to prevent overspeed spinning of the driveline. This slipping is required if snow chains are used, since some wheel spin is required for traction with chains.
With ESP, the vehicle is sensing the difference between the desired path of driving (through a steering wheel sensor) and the actual vehicle direction (measured through an acceleration sensor in the center of the car). If the system sees that the vehicle is not following the driver's steering correction, it will activate either the front or rear brake to correct the condition (either understeer (plow) or oversteer (spin)). If the event is too strong, it will also retard the throttle up to completely closing it. Again, the yellow light will flash. With ESP switched off, no correction will occur. The driver is on his or her own. The yellow light will be constantly on. The system will only reactivate under braking, since this is a panic situation and will hopefully save you if you get in over your head.
In addition to all of these electronic aids, Emergency Brake Assist senses a very fast application of the brake pedal (such as in an emergency stop). The system will fully activate all of the wheel brakes to full pressure. This will decrease the stopping distance in order to avoid an accident (hopefully).
As you can see, the Crossfire has many high tech driving aids which really enhance vehicle safety and enable the driver to avoid an accident. It also maintians the choice to be able to switch all of these aids off, if desired. It's the best of both worlds!