Double white stop line for US RR Xings, as used throughout California.
Same as version 01a but slightly extended to cover half the width of a 'L2 DL0 -Si -Sh' road.
Optimized for YARN/YARNish roads 'L2 DL0 -Si -Sh'. May look good as well on other roads of similar darkness, but should not be used on lighter textured roads.