Tadpole Farm: Traffic flow proposals from Crest Nicholson

Here is the map produced by Crest Nicholson to illustrate their proposals for traffic flow from the Tadpole Farm site:

Crest Nicholson say "As part of the proposals there is also the potential to introduce traffic

calming measures along Tadpole Lane, to slow vehicle speeds and to discourage rat-running traffic."

What would then happen to traffic arriving into Swindon from the western end of Tadpole Lane?  Should the alterations really discourage drivers who would normally travel the length of Tadpole Lane, wouldn't this then increase the traffic flow onto Oakhurst Way, regardless of traffic flow from the new development?

Crest Nicholson also have this to say about their 'Western Gateway': "A single lane bridge with traffic signals would restrict traffic flows from the new community."

Although traffic lights may be able to control traffic flows through to Oakhurst Way, we won't know exactly how this will be intended until details proposals are submitted further on down the line.  Without this information, it is difficult to predict exactly how bad the traffic along Oakhurst Way will become.