Thanks for the complements. cabdriver The Paint Pens are called “Painters” and they are made by Hunt. I picked them up at Wall-mart. The ones I purchased have a medium point. The line width may not scale properly to 4 inches but it looks good enough. To paint the lines I use a ruler or drafting triangle with a beveled edge. I also lean the pen toward the ruler. This prevents the paint from running under the ruler. Don’t worry if you make a mistake. I made one near the bridge. I just weathered over the bad line. It now looks like an older line from years past just like the lines we see on the real roads. For weathering the road, after I stripped it I dry brushed the entire road with Folk Art charcoal gray. I then dry brushed the wheel paths with Folk Art Light Gray. The “cracks” will be toned down shortly. I also need to look at adding some oil droppings and other "marks" on the pavement.