Some tell of the Gravelly Hill Interchange (aka "Spaghetti Junction"). Others shiver at the thought of Swindon's "Magic Roundabout" or its half cousin outside Hemel Hempstead. However I think it is fair to claim that I live near the two worst road junctions in the country.
First up to the north of us is the A14, M1, M6 intersection. It looks innocuous on the map. After all it's a dual carriageway and two motorways, all going in slightly different directions. In total that's 16 lanes to send traffic North, South, East and North West. Plus it's at the beginning of the A14 and practically the start of the M6 so that should make it fairly easy too.
The junction is a work of genius. It runs under the M1 and involves two inter-connected single carriageway roundabouts plus two or three single track country roads also feeding in. So the main route to and from East Anglia and the various ports on the East Coast plus the road one stop down from the Daventry International Rail Freight Terminal all come down to a single carriageway under a bridge where priority goes to a country lane. Half an hour either side of rush hour in morning and evening the queues will be 30 minutes in every direction, backing up onto the M1. Add to that there is no way a contraflow can be set up and any road repairs mean you have to shut the junction completely. If anyone wishes to see evidence of true evil in the world I commend this spot to you.
To the south is the M40/A43 junction. This was another one that ran two major cross country routes down to one roundabout with extra country roads added. At least this one has two lanes but to counteract this it also has the entrance to the motorway services off it. Thus everyone who wants to stop whether going north or south has to drive round it. Brilliant. Add to that that this section of the M40 forms the Middleton Stoney bypass linking the A43 & A34 so you get loads of traffic that only travels between two junctions, - this one and the next one south.
Now after a year or so it was clear this wouldn't work so at the cost of millions they put bin an extra roundabout to alleviate the problem. Only of course two interconnected roundabouts (see above) never make it any better. Plus the new roundabout is concealed in a dip so you can't see how busy it is when choosing your approach lane. And it blocks the view of the M40, so you can't see how busy that is. Overall a completely rubbish design, compounded by the fact they've had two goes at getting it right.
And what has this to do with wargaming? Nothing at all. Sometimes I just like to share.