Railroad Crossing Enhancements v1.0

This mod modifies the assets used around railroad crossings on the map to make them a bit more realistic.

- Added additional crossbuck signs on the overhead gantries that are used at railroad crossings

- Restored the 1 Track signage to the crossing gate and gantry models for crossings involving only 1 railroad track

- The large European-style horizontal red/white striped gates have been replaced with smaller 45° diagonal striped gates

- A retroreflective texture shader has been applied to the stripes on the gates and sign faces so they show up better at night in the player's headlights

- The round yellow "Railroad Crossing Ahead" sign has been redesigned to be reflective in the player's headlights at night

- The lamp faces of the railroad crossing signals light up and flash in an alternating pattern while the crossings are active

- Additional lights have been added to the gate arms (steady light at the tips and alternating flashing lights in the middle of the gates)

- Fixed the ladders on the gantries to stop near the top of the catwalk grating instead of at the top of the structures

- Added shadow geometry to the 1 Track railroad crossing gantry model (it originally had none!)

- Placed thicker posts on the rural railroad crossing signs that feature yield/stop signs (No one uses a 2x4 for a post!)