01337987

Component

https://doi.org/10.3141/2248-08

http://scholar.google.com...lard&publication_year=2011

Quieter cars, such as electric vehicles 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. To document differences in the sound levels of HEVs and internal combustion engine (ICE) vehicles, the authors measured the sound pressure levels in one-third octave bands of three HEVs 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 with the ICE vehicles are presented. In general, HEVs have lower sound levels than ICE vehicles 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.

01361564

11-3305

English

pp 61-67

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167680

Print

Figures (6) ; References (7) ; Tables (4)

Acoustics; Auditory perception; Blind persons; Electric vehicles; Hybrid vehicles; Pedestrian safety; Pedestrian vehicle interface; Pedestrians; Sound level; Tire/pavement noise; Traffic noise

Highways; Pedestrians and Bicyclists; Safety and Human Factors; Vehicles and Equipment; I83: Accidents and the Human Factor; I91: Vehicle Design and Safety

TRIS, TRB, ATRI

Feb 17 2011 6:28PM

• Age and Gender Differences in Overtaking Maneuvers on Two-Lane Rural Highways
• Auditory Detectability of Hybrid Electric Vehicles by Blind Pedestrians
• Driver Behavior on Acceleration Lanes: Driving Simulator Study
• Driving Simulator Research on Safe Highway Design and Operation
• Effects of Hybrid Interface on Ecodriving and Driver Distraction
• Effects of Individual Differences on Driving Behavior and Traffic Flow Characteristics
• Evaluation of Bilingual Sign Layout and Information Load Before Implementation of New Signing System
• Impact of Driver and Surrounding Traffic on Vehicle Deceleration Behavior at Onset of Yellow Indication
• Increasing Road Safety by Influencing Drivers’ Speed Choice with Sound and Vibration
• Matching Simulator Characteristics to Highway Design Problems
• Measurement of Company Car Drivers’ Aberrant Behaviors, Safety Attitudes, and Safety Climate Perceptions
• Predicting Route Choices of Drivers Given Categorical and Numerical Information on Delays Ahead: Effects of Age, Experience, and Prior Knowledge
• Simulator Study of Effects of Alternative Distraction Mitigation Strategies in Driver Workload Manager