Emergency braking is affected by the use of cruise control.

CONCLUSIONS: In male subjects, driving in a CC/ACC condition significantly delays the active emergency braking response to vehicle collision. This could result from higher amplitude of leg motion in the CC/ACC condition and/or by the age-related changes in motor control. Car and truck drivers must take account of the significant increase in the braking distance in a CC/ACC condition.
PMID: 28118033 [PubMed - as supplied by publisher]

Source: Traffic Injury Prevention - January 23, 2017 Category: Accident Prevention Authors: Jammes Y, Behr M, Llari M, Bonicel S, Weber JP, Berdah S Tags: Traffic Inj Prev Source Type: research