A roundabout detecting arrangement is disclosed configured to detect presence of a roundabout ahead of a vehicle hosting the arrangement. The arrangement includes a preceding vehicle monitoring unit configured to monitor at least one of a lateral movement and a heading direction of a vehicle preceding the host vehicle, and further configured to generate a first signal representative thereof. The arrangement also includes a processing unit configured to detect presence of the roundabout by processing the first signal. The present disclosure also relates to an adaptive cruise control arrangement and a method of detecting the presence of a roundabout.