How about this?
With black and white material.
var ls = 200; // length segments
var ws = 5; // width segments, tracks, streaks, stripes
…
var d = [ -0.6, -0.58, -0.01, 0.01, 0.58, 0.6 ];
for ( var j = 0; j < lss; j ++ ) { // length
for ( var i = 0; i < wss; i ++ ) { // width
// calculate here the coordinates according to your wishes
tangent = curve.getTangent( j / ls ); // .. / length segments
normal.cross( tangent, binormal );
binormal.cross( normal, tangent ); // new binormal
normal.normalize();
x = points[ j ].x + d[ i ] * normal.x;
y = points[ j ].y;
z = points[ j ].z + d[ i ] * normal.z;
xyzSet();
vIdx ++;
}
}