Author
Gonzalez, Tracy B.; Weave, Starla
Benefit Summary HTML

Lateral support systems have the potential to reduce road-departure crashes by decreasing the probability that a vehicle will leave its intended travel lane. Two lateral support systems on the market are Lane Departure Warning (LDW) and Lane-Keeping Assist (LKA). LDW systems issue a visual, audible, or haptic warning to alert the driver that the vehicle has crossed a lane boundary. LKA systems actively move the vehicle back into its lane by either applying steering torque or light differential braking.

This FHWA study compared lane-keeping behavior when drivers drove without lateral assistance, with LDW, or with LKA. The goals of this study were to:

  • assess the effect of each type of lateral support system on lane-keeping ability during conditions in which a driver unintentionally leaves their travel lane
  • assess how drivers respond to lateral support systems triggered in response to an intended lane departure, and
  • determine whether drivers respond appropriately to lane departures following an unexpected lateral support system failure.

User acceptance of each system was also examined.

Hyperlink Exit Door
No
Other Reference Number
FHWA-HRT-20-068
Publication Sort Date
Publisher
Prepared by Leidos for FHWA
Result Type
Title
To Alert or Assist: Comparing Effects of Different Lateral Support Systems on Lane-Keeping
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