Computers and their times.
Quote:
Originally Posted by
Elaine53
Also know that timings on mileage through mapquest etc never work out - it always seems to take twice as long!
Well, maybe not twice as much. But computers aren't human, and you're not a robot. You need to stop for fuel, food and bathroom as well as for red lights, slow down for construction and congestion, and occasionally strike an accident up ahead. Computers travel at or above the speed limit for 100% of the time, never need to slow down or stop. At the times they quote, they don't even have time to take a photo, but expect you to stop to take a photo and load it onto their site. It's no way to 'enjoy' a roadtrip.
We always recommend to add about 20% to the quoted times.
Lifey
Computed times do account for actual road conditions...
Quote:
Originally Posted by
Lifemagician
We always recommend to add about 20% to the quoted times.
Actually....
A bit more about "computed" traffic times.
In theory the algorithm seeks to predict the most likely travel time on any given segment, the times listed on programs like Google Maps are updated, on average, every five minutes. Obviously the data tends to be better in urban areas, where the program has access to more data. Even weather & construction delay data is incorporated into most mapping programs. And yes, most programs use pavement sensors so that they can account for accidents as they are ocurring...
So, when you are actually on the road, you are more likely to find the times suggested by the mapping programs to be more accurate. But using the times suggested when are looking at a trip in the future is much more problematic. Which is why we generally suggest adding 15-20% more time than stated in those programs.
In the broadest strokes, a 500 mile day on the road requires 8-10 hours, in the saddle driving at or above the stated speed limits.
Mark