This project is a collaboration between Toyota's CSRC and Virginia Tech

Lane Departure Warning (LDW) Systems warn a driver if the vehicle begins to move out of its lane, and are a recent addition to the list of available automotive active safety technologies. The design and operation of these systems vary across vehicle manufacturers.

Toyota’s CSRC and VT have partnered to estimate the benefits of Lane Departure Warning systems and identify the crash scenarios that can best evaluate these systems across many manufacturers.

CSRC and VT will combine crash data from multiple databases from NHTSA, including NASS – CDS (which contains details of severe crashes) and NMVCCS (which contains crash causation details) along with vehicle EDR data from individual vehicles to analyze and identify the most frequently occurring crash scenarios.


These scenarios, along with a model representing drivers, will be used to estimate the safety benefits of installing LDW systems on vehicles, including associated crash and injury reduction rates.


The three-year project will be conducted in three phases, beginning with a review of NHTSA crash databases to determine the most occurring and applicable lane departure crash scenarios for the evaluation and determination of LDW systems’ safety benefits. Phase two will create a model for estimating the crash and injury/fatality reduction rate associated with these scenarios, while phase three will utilize computer simulation software to estimate the safety benefits in terms of crash and injury/fatality reduction.