M25 motorway Europe's second longest orbital road after the Berliner Ring, which is . Originally built almost wholly as a dual three-lane motorway, much of the motorway has been widened: to dual four lanes for almost half, to a dual five-lanes section between junctions 12 and 14 and a dual six-lane section between junctions 14 and 15. Further widening is in progress of minor sections with plans for managed motorways in many others. To the east of London the two ends of the M25 are joined to complete a loop by the non-motorway A282 Dartford Crossing of the River Thames between Thurrock
R25 (London) Gospel Oak to Barking Line and a provision for a stop at Renwick Road (if needed) and states that a further extension across the Thames should be provisioned. R25 (London) R25 is a possible railway orbital around the Zone 3 area of London, England. The proposed line would use some existing lines by National Rail and London Overground. Issue 755 of "Rail Magazine" (20 August 2014) says that the Mayor of London has started consulting on a new Zone 3 orbital railway, the 'R25'. The nickname alludes to the M25 orbital motorway. The idea featured in news media when the