In the Busy Traffic's Boom...

A feature of my Kentish walk (see below) that is already, I suspect, being discreetly edited out of my memory is that it involved twice crossing the M25 - once by footbridge, once by underpass. Crossing a motorway by pedestrian bridge is a strange experience, the very opposite of driving along one in a car. Cosily insulated within a quiet, smooth-running modern motor car, one has little sensation either of speed or of noise. Looking down from a bridge at the passing traffic, one is only too aware both of the relentless din of traffic and of the astonishing speed at which it hurtles past, each vehicle creating its own Dopler whoosh as it passes. The necessity of making two crossings meant that a portion of the route was walked within the extensive 'aural footprint' (as I suppose it is called) of the motorway. To the eye, all was glorious, convincingly 'unspoilt' countryside - but the ear told another story, the sad truth that we live in a car-dominated, car-connected, car-ravaged land. The insistent roar of the motorway was an unwelcome accompaniment, but it gave the walking a certain bittersweet edge, making the survival of such beautiful country so close to the ever-spreading suburbs seem even more precarious, and even more to be cherished.
Then, today, out for a local stroll, I was walking at speed along an always busy (yes, even on a Sunday) main road, hurrying to escape into the fine large park that adjoins it, when an extraordinary thing happened. Suddenly there was not a car to be seen in either direction (a couple of hundred yards each way) and an unaccustomed, friendly silence had fallen - the car-free silence, full enough of birdsong and sporadic human voices, that only a few decades ago would have been commonplace, but now, in such a place, seemed almost a miracle. It lasted maybe 20 seconds, and then the din of traffic - the din we no longer even notice - resumed its sorry sway.