But - what percentage of local traffic or through traffic ends up on those roads? It's relative importance that matter. If you need to go through an area - what do you take?
Same concept applied to city labelling - look at a globe some time. It's not unusual to see "Thule, Greenland" labelled, or "Iqaluit, Nunavut". Why? Because they're the most significant towns in the area - even though they have tiny populations. On the other hand - what about San Jose, CA, 10th biggest city in the US? They always label San Francisco first - even though San Jose is bigger, with a million people. It's perceived importance. -Alan (self-conscious resident of San Jose) ________________________________ From: Karl Newman <siliconfi...@gmail.com> To: Joseph Scanlan <n7...@arrl.net> Cc: talk-us@openstreetmap.org Sent: Wednesday, December 17, 2008 10:04:44 AM Subject: Re: [Talk-us] Road classification On Wed, Dec 17, 2008 at 9:49 AM, Joseph Scanlan <n7...@arrl.net> wrote: On Tue, 16 Dec 2008, Alan Brown wrote: This is the way I like to think about it - if you're zoomed way out, a map of motorways and trunk roads alone is best: plenty of useful information, but not cluttered. This philosophy helps justify what you'll find here in the desert south west. For example, US 93 is pretty much the route one takes from Ely, through Caliente, to Las Vegas, Nevada. About 260 miles of that is two lane road. It's marked as highway=trunk not because its some grand highway along the eastern edge of the state but because it is *the* highway along the eastern edge of the state. US 95 through California (about 100 miles) is another example. Traveling from Las Vegas to Quartszite or Yuma, Arizona state route 95 is a good alternative but if a routing program insisted on Interstates one would find oneself going through Phoenix or Los Angeles. Kind of a long way to go. I should defend both highways by pointing out they don't see much cross traffic. ;-) They probably don't see much through traffic, either... Karl
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