TY  - JOUR
PY  - 2021//
TI  - Effects of auditory display types and acoustic variables on subjective driver assessment in a rail crossing context
JO  - Transportation research record
A1  - Nadri, Chihab
A1  - Chan Lee, Seul
A1  - Kekal, Siddhant
A1  - Li, Yinjia
A1  - Li, Xuan
A1  - Lautala, Pasi
A1  - Nelson, David
A1  - Jeon, Myounghoon
SP  - 1457
EP  - 1468
VL  - 2675
IS  - 9
N2  - Highway-rail grade crossings (HRGCs) present multiple collision risks for motorists, suggesting the need for additional countermeasures to increase driver compliance. The use of in-vehicle auditory alerts (IVAAs) at HRGCs has been increasing, but there are limited standards or guidelines on how such alerts should be implemented. In the current study, we sought to investigate the effect of different auditory display variables, such as display type and acoustics, on subjective user assessments. We recruited 24 participants and asked them to rate 36 different IVAAs belonging to one of three display types (earcons--short synthetic tones, speech alerts, and hybrid alerts consisting of an earcon and speech) along 11 subjective ratings. <br><br>RESULTS showed that a hybrid alert led to better overall ratings for acceptance, safety, and semantic understanding when compared with earcon or speech alerts. Additional analyses revealed that semantic variables, such as speech order and gender, should be accounted for when designing IVAAs in an HRGC context. Hybrid IVAAs with spatial audio showed lower Urgency and Hazard level ratings. <br><br>FINDINGS of the current study can help inform the design of IVAAs for HRGCs.<p />  <p>Language: en</p>
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/10.1177/03611981211007838
ID  - ref1
ER  -