Rule Number | Signal Aspect | Name | Indication |
| C-281 | Signal Aspect | CLEAR | Proceed |
| C-281-B | Signal Aspect | APPROACH LIMITED | Proceed, approaching next signal not exceeding Limited Speed |
| C-281-C | Signal Aspect | LIMITED CLEAR | Limited Speed through turnouts, crossovers, sidings and over poweroperated switches; then proceed |
| C-281-D | Signal Aspect | LIMITED APPROACH | Limited Speed through turnouts, crossovers, sidings, and over power-operated switches; the proceed prepared to stop at the next signal |
| C-282 | Signal Aspect | APPROACH MEDIUM | Proceed, approaching next signal not exceeding Medium Speed |
| C-283 | Signal Aspect | MEDIUM CLEAR | Medium Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed |
| C-283-A | Signal Aspect | MEDIUM APPROACH MEDIUM | Medium Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed approaching next signal not exceeding Medium Speed |
| C-283-B | Signal Aspect | MEDIUM APPROACH SLOW | Medium Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed approaching next signal not exceeding Slow Speed |
| C-284 | Signal Aspect | APPROACH SLOW | Proceed, approaching next signal not exceeding Slow Speed |
| C-285 | Signal Aspect | APPROACH | Proceed prepared to stop at the next signal. Trains exceeding medium spped must immediately begin reduction to medium speed as soon as the engines passes the Approach Signal. |
| C-285-A | Signal Aspect | DISTANT SIGNAL | Approach next signal prepared to stop. |
| C-286 | Signal Aspect | MEDIUM APPROACH | Medium Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed prepared to stop at next signal |
| C-287 | Signal Aspect | SLOW CLEAR | Slow Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed |
| C-287-A | Signal Aspect | SLOW APPROACH SLOW | Slow Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed approaching next signal not exceeding Slow Speed |
| C-288 | Signal Aspect | SLOW APPROACH | Slow Speed through turnouts, crossovers, sidings and over power-operated switches; then proceed prepared to stop at next signal |
| C-290 | Signal Aspect | RESTRICTING | Proceed at Restricted Speed |
| C-291 | Signal Aspect | STOP AND PROCEED | STOP, Then Proceed at Restricted Speed |
| C-292 | Signal Aspect | STOP | Stop |
| C-295 | Signal Aspect | APP MARKER | Proceed Approaching next signal as authorized by the aspect displayed. If signal is dark, proceed prepared to stop at next signal until it can be plainly seen that indication of next signal allows train to proceed |
| C-298 | Signal Aspect | GRADE | Proceed at Restricted Speed |