CAR can be used to rate-limit traffic based on certain matching criteria, such as incoming interface, IP precedence, QoS group, or IP access list criteria. CAR provides configurable actions, such as transmit, drop, set precedence, when traffic conforms to or exceeds the rate limit.
If you wish to rate-limit traffic without using an ACL, use the Modular QoS CLI to configure the Traffic Policing feature.