Published: March 10, 2016 | Arlington, VA
In a recent research activity performed on all Honda vehicles that were brought to dealerships, IIHS found that all but one of 184 models equipped with the two features had forward collision warning turned on, while only a third of vehicles had lane departure warning activated. IIHS advocates wide-spread adoption of ADAS features and recently mandated the use of autonomous emergency braking in all US vehicles.
The findings are consistent with previous research showing that vehicle owners found lane departure warning more annoying than other crash avoidance technologies. They also may help explain why studies so far haven’t found a consistent benefit from the feature, in contrast to forward collision warning.
Most lane departure warning systems use a camera to detect lane markings and depend on turn signal use to determine whether a driver intentionally changed lanes or not. Many people don’t use turn signals consistently, so the result is a lot of alerts that drivers may perceive as false alarms. Camera sensors also may detect markings such as shifted lanes in construction zones that lead to more nuisance alerts.
In addition to driver preferences, another reason lane departure warning may be turned off more often in these Hondas is that it is simple to do so by pressing a button near the instrument panel. In contrast, to turn off forward collision warning in the Accord and the Odyssey, a driver needs to navigate through several steps of the vehicle settings menu.
The CR-V has a button for its collision mitigation braking system, which includes forward collision warning. However none of the six CR-Vs observed had collision mitigation turned off.
All the vehicles retain the previous on/off setting for each of the two features from one trip to the next.