View Single Post
Old 09-17-2008, 07:18 PM   #49 (permalink)
cfg83
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
Thanks: 439
Thanked 532 Times in 358 Posts
RH77 -

Quote:
Originally Posted by RH77 View Post
...

Just an observation -- I routinely drive in urban rush-hour slowdowns that force an average speed of 50mph. It isn't stop-n-go, but density increases. I get great FE during these periods due to slower speeds. Hills are harder to keep momentum, but entering/exiting traffic keep 2 of 3 lanes flowing smoothly.

Have others experienced this type of traffic flow?

RH77
Yes. There is a "sweet spot" in LA traffic where the density forces the cars to slow down but not stop. This creates a lower average MPH. All my best runs have been when my average MPH is below 50.

Here's my scangauge readings for my best run :

My SW2's (home to work) trip log for 2008-04-25
Quote:
SCANGAUGE "CURRENT" READINGS :
61.2 MPG,
0.4 Gallons,
200 Water Temp Max,
27.5 Miles,
2135 RPM Max,
0.6 Hours,
58 MPH Max,
45 MPH AVG
HYPOTHESIS : Nice hot dry LA weather and a few glorious turtles to follow. Following one super-slow truck helped me on the 105 West, where I typically start falling below 60 MPG on my best runs.
As lovemysan has stated in other posts, I *know* that my best run would be at an average speed of around 40 MPH. However, until the Eco-Gamera appears before me on my way to work, that ain't gonna happen.

Somewhere in my urban transportation planning notes there is a description of the original LA transportation plan. The idea was to have freeways, but also "parkways" that would be at lower speeds, say 45 MPH. The parkways would have been wide streets like Venice, and intersections would have been bridged so that cars could keep moving. The corners of intersections would have been given up to make right-turn merge lanes. There would be no left turns (three rights make a left). This would have meant giving up the corner lots on these "sub-arteries", but I think it would have gone a long way to relieving the congestion we are experiencing right now.

CarloSW2
__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote