Index: src/uk/me/parabola/imgfmt/app/net/RoadDef.java
===================================================================
--- src/uk/me/parabola/imgfmt/app/net/RoadDef.java	(revision 808)
+++ src/uk/me/parabola/imgfmt/app/net/RoadDef.java	(working copy)
@@ -328,14 +328,16 @@
 		// This might be unnecessary if we just make sure
 		// that every road starts with a node.
 		int nbits = nnodes;
-		if (!startsWithNode)
+		if (!startsWithNode && nnodes == 1) {
 			nbits++;
+		}
 		writer.putChar((char) nbits);
 		boolean[] bits = new boolean[nbits];
 		for (int i = 0; i < bits.length; i++)
 			bits[i] = true;
-		if (!startsWithNode)
+		if (!startsWithNode && nnodes == 1)
 			bits[0] = false;
+
 		for (int i = 0; i < bits.length; i += 8) {
 			int b = 0;
 			for (int j = 0; j < bits.length - i; j++)