Part 1500 - MINIMUM CLEARANCES APPLICABLE TO TRACKS, STRUCTURES, FIXTURES AND OTHER APPURTENANCES OF RAILROADS
- Subpart A - GENERAL RULES (§§ 1500.10 — 1500.20)
- Subpart B - STEAM RAILROADS: TRACK CENTERS (§§ 1500.110 — 1500.150)
- Subpart C - STRUCTURAL CLEARANCES (§§ 1500.160 — 1500.310)
- Subpart D - ELECTRIC INTERURBAN RAILROADS: TRACK CENTERS (§§ 1500.410 — 1500.450)
- Subpart E - ELECTRIC INTERURBAN RAILROADS: STRUCTURAL CLEARANCES (§§ 1500.460 — 1500.610)
- Subpart F - STREET RAILROADS (§§ 1500.700 — 1500.770)
- Subpart G - CLEARANCE PROCEDURE (§§ 1500.810 — 1500.840)