Warning: This action has been automatically identified as harmful

I just wanted to create a proposal on wiki.

{{Proposal_Page
|name=intersection_with_equal_roads
|user=HiB
|key=highway
|value=equal_roads
|type=n/a
|definition=give way to the vehicles coming from the right
|appearance=n/a
|status=
|draftStartDate=2013.09.14
|rfcStartDate=
|voteStartDate=
|voteEndDate=
}}

Proposal<br>
this route sign is missing, more info [http://en.wikipedia.org/wiki/File:Tienristeys_161.svg here]<br>
Rationale<br>
if there is no any traffic signals, or restrictions in an intersection, than this tag should by defined<br>
Examples<br>
if there is no any traffic signals, or restrictions in an intersection, than this tag should by defined inner city<br>
Tagging<br>
name of the tag and value can be: highway=equal_roads<br>
Applies to<br>
intersection node<br>
Rendering<br>
a cross sign as in the route sign<br>
Features/Pages affected<br>
Comments<br>
This usage of this route sign is common in Hungary often hard to detect whether the intersection is equal or not, if this sign is missing. driver should looking for a give a way sign.<br>

But I can not save the page, and I got the following error:

Warning: This action has been automatically identified as harmful. Unconstructive edits will be quickly reverted, and egregious or repeated unconstructive editing will result in your account or IP address being blocked. If you believe this action to be constructive, you may submit it again to confirm it. A brief description of the abuse rule which your action matched is: Spam bot (main)

And the link of the page I wanted to edit/create is: http://wiki.openstreetmap.org/wiki/Intersection_with_equal_roads
What did I wrong? Thanks