Hello Jiaming,
You're correct -- traffic on Brittan in the stretch between Alameda and Crestview can get quite busy, even on the weekend. If you look at a map of that area, you'll see that there are basically two main roads that lead down from the hills toward downtown San Carlos -- Brittan Ave and Melendy Drive. (Crestview will direct you to Edgewood Road, and Club Drive puts you more toward the Belmont direction)
So you can see how quite a few residents in that area use these two roads to get to and from work, downtown, etc.. You can expect that the busiest times of the day will be during the morning and evening commute hours during the week. On weekends, Brittan can still be busy because there is an athletic field at the top of the hill (Crestview Park) that gets quite busy during the soccer season. And again, those two roads serve quite a few residents.
The noise level of the home depends largely on where you're at on that section of Brittan. You'll notice that on the lower stretch, the road is flatter. As you get closer to Crestview, the road steepens significantly. Much of what dictates the noise level is how well the home is insulated, and where it's located respective to the street.
Safety -- again, it depends on where you're located. For kids crossing the street, a straight visible section is probably safer than a blind turn. I don't have any stats on traffic related issues, but the San Carlos Police Department can provide you with some useful info.
Values -- Homes on Brittan hold their value quite well. You'll notice that in San Carlos, the further west you go the homes are generally newer. So there are some nice large homes up in that area that were built in the 60's and 70's (as opposed to the 40's and 50's when the flatlands were built out.)
I hope this helps.. Please feel free to email me directly at chuck@cghomes.net if you have any additional questions.
Chuck - Mon Nov 9 2009, 10:51