Examples of the British lay-by in slightly different forms, aerial views.
Typical lay-by on a two-lane road:
http://maps.google.co.uk/maps?f=q&hl=en&geocode=&q=north+walsham&sll=53.800651,-4.064941&sspn=8.155452,18.457031&ie=UTF8&ll=52.802126,1.397442&spn=0.001018,0.004292&t=k&z=18
Sometimes they go a few feet further back and are separated from the roadway by a grassy area:
http://maps.google.co.uk/maps?f=q&hl=en&geocode=&q=hoveton&sll=52.580731,1.280841&sspn=0.001024,0.002253&ie=UTF8&ll=52.753061,1.45454&spn=0.00102,0.004292&t=k&z=18
Longer lay-by with acceleration/deceleration lanes on a faster dual carriageway (divided highway):
http://maps.google.co.uk/maps?f=q&hl=en&geocode=&q=norwich&sll=52.753061,1.45454&sspn=0.00102,0.002253&g=hoveton&ie=UTF8&ll=52.618475,1.209161&spn=0.002045,0.008583&t=k&z=17