Minimum noise requirements for cars


From Autopia: Lotus Makes Hybrids Sound Like Real Cars

Apparently some people are worried that quiet cars will not give auditory clues about their presence, and will run over pedestrians (esp. blind pedestrians). So Lotus is developing a technology that will cause the car to make noise even if it is not running on a conventional engine.


Hi David, Great blog, I read it all the time. This is a great post. I guest taught at the California School for the Blind in 2007, and the students mentioned how the adoption of hybrids worries them regarding their safety. Quiet cars coupled with the lack of audio signal coordination and deployment is a major concern for the blind.

-Megan Smirti, UC Berkeley

Hi David. I'm a long time reader too and greatly enjoy your thoughtful posts. I'd like to add that bicyclists have also expressed a concern with quiet vehicles because we use auditory clues to know if a car is approaching out of sight. Despite this, I am looking forward to quieter cities in the future. I've often wondered what kind of mental stress it causes us to be constantly exposed to low levels of noise. That said, more brainstorming is necessary regarding the safety of persons who are blind. The larger problem is that most cities are designed for cars with little consideration for people, blind or not.

David Levinson

Network Reliability in Practice

Evolving Transportation Networks

Place and Plexus

The Transportation Experience

Access to Destinations

Assessing the Benefits and Costs of Intelligent Transportation Systems

Financing Transportation Networks

View David Levinson's profile on LinkedIn

Subscribe to RSS headline updates from:

About this Entry

This page contains a single entry by David Levinson published on August 7, 2008 4:56 PM.

Media Blitz was the previous entry in this blog.

Traffic Quiz is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.


Monthly Archives


Powered by Movable Type 4.31-en