Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 5   >   >>
krisi
User Rank
CEO
Re: Electrics Can Do Well For Some
krisi   8/20/2013 11:04:40 AM
NO RATINGS
True, you need to start somewhere...but only if you think it makes sense in the long run...I am still sceptical...I would raher invest in public transportatation than in EV cars...and encourage people to walk/bike and build the cities in a such a way to support the car-light vision

junko.yoshida
User Rank
Blogger
Re: Electrics Can Do Well For Some
junko.yoshida   8/20/2013 10:17:58 AM
NO RATINGS
Kris, massive adoption is the end game. But as you and I both know, it's a long road to get there... But as they say, you need to start somewhere, right?

krisi
User Rank
CEO
Re: Electrics Can Do Well For Some
krisi   8/20/2013 9:41:42 AM
NO RATINGS
but I thought the whole idea is based on rather massive adoption...saying some users will not be enough to justify building massive charging network (look how many gas stations you have)

krisi
User Rank
CEO
Re: good sign?
krisi   8/20/2013 9:39:58 AM
NO RATINGS
I have seen this working in numerous countries and thought it was deployed globally...really surprised that this is not used in USA, such a simple system

mhrackin
User Rank
CEO
Re: good sign?
mhrackin   8/20/2013 9:14:44 AM
NO RATINGS
???  This (pedestrian crossings activated on demand, USUALLY but not always synchronized with the other signals) has been VERY common throughout USA for decades!  Pedestrian crossings aren't the problem in large cities; street crossings are.  Don't you have any of those in Vancouver?

Patk0317
User Rank
CEO
Re: good sign?
Patk0317   8/19/2013 9:27:59 PM
NO RATINGS
Speaking of Vancouver, they have a realliy innovative traffic stoplight system there. On a busy street the traffic lights stay green until a pedestrian pushes the the button to cross the street. This works well and I wish it woud be adopted in the USA.

betajet
User Rank
CEO
Re: good sign?
betajet   8/19/2013 7:20:13 PM
NO RATINGS
The Chinese are experimenting with a Capabus, which uses ultracapacitors instead of batteries.  These give a few kilometers of range.  At each bus stop, the bus quickly recharges the ultracaps (faster than a battery recharge) using overhead contacts.  This way you don't have to cart heavy batteries around all day.

AC Transit in Oakland/Berkeley/etc has some fuel cell buses, which work very well.  They use solar or bio-gas to make the hydrogen.

San Francisco still has plenty of trolley buses, which have overhead wires.  Some of these overhead wires are shared with streetcars.

This is the 21st Century.  Nobody should have to smell diesel exhaust any more.

 

Frank Eory
User Rank
CEO
Re: Total Cost of Ownership
Frank Eory   8/19/2013 6:38:58 PM
NO RATINGS
The price reduction indeed makes the ROI and total cost of ownership closer to combustion engine cars & hybrids, but whether it is compelling enough depends on so many other factors. How long will the tax break continue? Better buy one before it expires. Do you have access to public or employer-provided free charging stations? That certainly tips the equation very favorably toward buying an EV now, but how long will it be before free charging for early adopters goes away?

Besides the costs, there are the inconvenience factors -- range, accessibility of charging stations (free or otherwise) and time to charge.

Among all the plug-in EVs, I would find the Tesla Model S very compelling -- if only they could find a way to make a profit on it at half the price!

 

krisi
User Rank
CEO
Re: good sign?
krisi   8/19/2013 6:24:35 PM
NO RATINGS
I live in Vancouver, Canada where buses don't run that long shifts...and try to avoid using busses when in USA...I am still not clear what is the problem with swapping batteries, 6 hours not enough to do it at night? what is the problem in standarizing this operation and have all busses look be teh same?

mhrackin
User Rank
CEO
Re: good sign?
mhrackin   8/19/2013 5:58:07 PM
NO RATINGS
Never been in a big American city?  Buses usually run 18 or more hours a day.  Diesel or CNG buses can be refueled with a quick depot stop.  The battery packs needed to support operation for even a full shift could easily weight at least a ton, not real easy to swap, and they would need several sets for EACH vehicle, since they all run the same shifts.  Batteries that large and with that much capacity would not recharge very quickly, even with "fast-charging" techniques. 

Page 1 / 5   >   >>


Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Engineer's Bookshelf
Caleb Kraft

The Martian: A Delightful Exploration of Math, Mars & Feces
Caleb Kraft
3 comments
To say that Andy Weir's The Martian is an exploration of math, Mars, and feces is a slight simplification. I doubt that the author would have any complaints, though.

The Engineering Life - Around the Web
Caleb Kraft

Surprise TOQ Teardown at EELive!
Caleb Kraft
Post a comment
This year, for EELive! I had a little surprise that I was quite eager to share. Qualcomm had given us a TOQ smart watch in order to award someone a prize. We were given complete freedom to ...

Design Contests & Competitions
Caleb Kraft

Join The Balancing Act With April's Caption Contest
Caleb Kraft
56 comments
Sometimes it can feel like you're really performing in the big tent when presenting your hardware. This month's caption contest exemplifies this wonderfully.

Engineering Investigations
Caleb Kraft

Frankenstein's Fix: The Winners Announced!
Caleb Kraft
8 comments
The Frankenstein's Fix contest for the Tektronix Scope has finally officially come to an end. We had an incredibly amusing live chat earlier today to announce the winners. However, we ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)