JAPAN: Nissan makes Leaf noisier at low speed
Nissan has added sound so pedestrians know the Leaf is coming
Nissan is unveiling the new ‘noise’ it has created for its Leaf electric car. It has invited nearly 500 people to drive its new EV at the company’s Oppama test track in Japan over the next week.
Media, shareholders, government officials, analysts and some of the first customers to place reservations for the EV will be getting behind the wheel of the car for an exclusive world first drive when they will hear the 'approaching vehicle sound for pedestrians' system, which also will be used in the Fuga hybrid expectd on sale this autumn.
Nissan has been continually refining the Leaf ahead of October’s start of production, including what noise it should make to warn pedestrians of its approach. The system is the first of its type to be introduced by an automaker though others have been considering it for hybrid models that can operate on electric power alone.
Nissan said it had developed a set of distinctive sounds after studying behavioural research of the visually impaired and working with cognitive and acoustic psychologists.
The sine-wave sound system sweeps from 2.5kHz at the high end to a low of 600Hz, an easily audible range across age groups. Nissan worked to avoid a sound range that would add unnecessary noise to the environment (around 1,000Hz).
Depending on the speed and status - accelerating or decelerating - the sound system will make sweeping, high-low sounds. For instance, when the car is started, the sound will be louder, so pedestrians are aware of it. When a car is in reverse, the system generates an intermittent sound. The sound system ceases operation when the vehicle exceeds 30km/h (20mph) and enters a sound range where regular road noise is high. It engages again as the EV slows to under 25km/h.
The system is controlled through a computer and synthesiser in the dash panel and the sound is made by a speaker in the engine compartment. A switch inside the vehicle can turn the system off temporarily – it automatically turns back on at the next ignition cycle.
In all the barrage of publicity and significant wads of government cash being pushed in the general direction of electric vehicles, lurks a technology whose genesis has been around for a considerable ...
This QUBE report from just-auto provides a comprehensive overview of the global electrified vehicles sector, major OEM developments, top 14 markets, technology trends and market projections. Use this ...
News out of Japan this week suggested that some automakers were planning to fight back against the hybrid with a slew of new, uber efficient combustion engines. Mazda was mentioned but hybrid supremo ...
Suzuki will recall 177,692 units of its WagonR and six other minivehicles, including those it produces for other automakers, citing defective door parts, the Japanese transport ministry said....
TI Automotive has inaugurated its fuel tank systems factory in San Luis Potosi, Mexico, where it will produce low-emission, plastic fuel tanks, pumps and modules for the Nissan Micra, Note and Versa v...
The Toyota Prius remained the top selling car in Japan for the 18th consecutive month in November according to figures from the Japan Automobile dealers Association....
- COMMENT: ADAS rollout comes with human issues
- COMMENT: Why the VW Touareg Hybrid had to die
- THE WEEK THAT WAS: Driving for fun...
- ANALYSIS: Will the XE work for Jaguar?
- ANALYSIS: Autonomous cars and interior design
- Chinese brands have failed to catch on in Brazil
- Marchionne merger overtures to GM's Barra rebuffed
- Finally, Ford's Mustang is 'official' for Europe
- Volvo China plant starts US exports
- Big Four steadily losing Brazilian market share