Acoustic characteristics of hybrid electric vehicles and the safety of pedestrians who are blind

Hastings, Aaron; Scarpone, Chris; Samiljan, Robert; Garay-Vega, Lisandra; Pollard, John K.; John A. Volpe National Transportation Systems Center (U.S.)

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Acoustic characteristics of hybrid electric vehicles and the safety of pedestrians who are blind

2010-08-01
By Hastings, Aaron ; Scarpone, Chris ; Samiljan, Robert ; ...

[PDF-461.35 KB]

English

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Creators:

Hastings, Aaron ; Scarpone, Chris ; Samiljan, Robert ; Garay-Vega, Lisandra ; Pollard, John K.

Hastings, Aaron ; Scarpone, Chris ; Samiljan, Robert ; Garay-Vega, Lisandra ; Pollard, John K. Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center (U.S.)
Subject/TRT Terms:

[+]

Acoustic Properties Blind Persons Electric Vehicles Human Factors Hybrid Vehicles Pedestrian Safety
Resource Type:

Proceedings
Corporate Publisher:

John A. Volpe National Transportation Systems Center (U.S.)
NTL Classification:

NTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENT;NTL-ENERGY AND ENVIRONMENT-Environment Impacts;NTL-PEDESTRIAN AND BICYCLES-Pedestrians;NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-SAFETY AND SECURITY-Vehicle Design;NTL-SAFETY AND SECURITY-Human Factors;
Abstract:

Quieter cars such as electric vehicles (EVs) and hybrid electric vehicles (HEVs) may reduce auditory cues used by pedestrians to assess the state of nearby traffic and, as a result, their use may have an adverse impact on pedestrian safety. In order to document differences in the sound levels of HEVs and internal combustion engine (ICE) vehicles, the authors measured the sound pressure level in one-third octave bands of three HEV and three corresponding ICE vehicles for the following operating conditions: idle, backing up at 5 mph; approaching at a constant speed (6, 10, 20, 30, and 40 mph); accelerating from stop, and slowing from 20 to 10 mph at 3.28 ft/s2. Sound level results comparing the HEVs and ICEs are presented. In general, HEVs have lower sound levels than ICEs for operating conditions below 20 mph, but above 20 mph, the sound from road-tire interactions dominates and the sound levels of the two vehicle types converge.
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PDF
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Volpe Center
Main Document Checksum:

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urn:sha256:33b3df03665d55ad72be1280828dccefc9411308ccd45753270383e3ed735f8c
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https://rosap.ntl.bts.gov/view/dot/9040/dot_9040_DS1.pdf
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Acoustic characteristics of hybrid electric vehicles and the safety of pedestrians who are blind

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