01770632

Component

https://doi.org/10.1177/03611981211007838

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. 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. Findings of the current study can help inform the design of IVAAs for HRGCs.

© National Academy of Sciences: Transportation Research Board 2021.

English

pp 1457-1468

2021-9

Transportation Research Record: Journal of the Transportation Research Board

Web

References (35)

Audible warning devices in vehicles; Design; Human factors; Railroad grade crossings

Highways; Operations and Traffic Management; Safety and Human Factors; Vehicles and Equipment

TRIS, TRB, ATRI

Apr 25 2021 3:09PM