Dan, I go along with the observations made in these replies, but it's important to add that Marple's traffic problems are not just confined within the borders of Marple. Â The problems are also in the surrounding suburbs of Stockport - Offerton, Bredbury and Hazel Grove. Â So it's getting out of Marple (rather than getting around within Marple) that's the real nightmare.
The root of the problem of course, lies in poor public  transport.  Andy is the expert, and perhaps he knows why there seems to be so little interest in building the 'Brinnington Link' (a new curve at Reddish vale linking the Marple - Piccadilly line  with the Stockport - Guide Bridge line, which would restore a direct rail link between Stockport and Marple, Romiley and Bredbury).  It looks so practical (much more so than the prospect of ever extending Metrolink to Marple), and it would give surprisingly quick journey times from Stockport at any time of the day: Brinnington 9 minutes, Bredbury 12 minutes, Romiley 15 minutes, Marple 18 minutes. Â
In your dreams?
Dave