Title page for ETD etd-382915749731261

Type of Document Master's Thesis
Author Hetrick, Shannon
URN etd-382915749731261
Title Examination of Driver Lane Change Behavior and the Potential Effectiveness of Warning Onset Rules for Lane Change or "Side" Crash Avoidance Systems
Degree Master of Science
Department Industrial and Systems Engineering
Advisory Committee
Advisor Name Title
Tijerina, Louis
Wierwille, Walter W.
Dingus, Thomas A. Committee Chair
  • lane change
  • crash avoidance
  • coutermeasure
  • warning algorithm
  • warning onset
  • SCAS
Date of Defense 1997-03-27
Availability unrestricted
Lane change or "Side" Crash

Avoidance Systems (SCAS)

technologies are becoming available

to help alleviate the lane change

crash problem. They detect lane

change crash hazards and warn the

driver of the presence of such

hazards. This thesis examines driver

lane change behavior and evaluates

the potential effectiveness of five

warning onset rules for lane change

or "side" crash avoidance system

(SCAS) technologies.

The ideal SCAS should warn the

driver only when two conditions are

met: (1) positive indication of lane

change intent and (2) positive

detection of a proximal vehicle in

the adjacent lane of concern.

Together, these two conditions

create a crash hazard. The

development of SCAS technologies

depends largely on an

understanding of driver behavior

and performance during lane change

maneuvers. By quantifying lane

change behavior, real world crash

hazard scenarios can be simulated.

This provides an opportunity to

evaluate potential warning onset

rules or algorithms of driver intent to

change lanes.

Five warning onset rules for SCAS

were evaluated: turn-signal onset

(TSO), minimum separation (MS),

line crossing (LC), time-to-line

crossing (TLC), and tolerance limit

(TL). The effectiveness of each rule

was measured by the maximum

response time available (tavailable)

to avoid a crash for a particular lane

change crash scenario, and by the

crash outcome, crashed or crash

avoided, of a particular lane change

crash scenario.

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