Duplicate title tag

[JohnHuynh]

Hello, 
My site have problems with duplicate title, they were reported from google webmaster. For example:
/extra-services/car-pick-up-service-146.html (1) /extra-services/transportation--car-rails--146.html (2) According to my sitemap the first URL is right (1). But the second URL is wrong, I don't know it occur here.

[Chris.Menke]

John,

It is certainly there.  The first thing I'd look at are the social chicklets (facebook, twitter, g+, linkedin) at the bottom of the page. Those links look like they're code strangely.  Then 301 one of those pages to the other.  Look in your file manager on the server for the page you think is not supposed to be there--it may be an old page that was supposed to be deleted but wasn't--just a guess.

[brad.s.knutson]

As Chris stated above, the page is certainly there.  Some CMS' will create duplicate pages and it might be as simple as determining where the page is coming from and removing it.  I couldn't find any inbound links for this page, so you would probably be ok removing it.

On the other hand, 301 redirecting the page would probably be a cleaner option.  If you are running an apache server, you would write a 301 redirect in your .htaccess file like below.

RedirectMatch 301 /extra-services/transportation--car-rails--146.html /extra-services/car-pick-up-service-146.html

This should take care of the problem, and GWMT won't bother you about it anymore.

[JohnHuynh]

I just recognize we parse content of a page base on ID, so anything character change between "car-pick-up-service" and "146", the results still is /extra-services/car-pick-up-service-146.html.
The page /transportation--car-rails--146.html  may be come from somewhere, I could not find them. Is there any way to remove this link? because I don't want use 301 redirect.

Thanks,