NORAC Signal Aspects

From NORAC Operating Rules, 8th Edition, Effective 1 January 2003.

Cab Signal Aspects

Name Aspects SDU Display
Clear Clear The center speedometer numerals in green
Cab Speed Cab Speed A green band 0 to 60 or 80 MPH
Approach Limited Approach Limited A green band 0 to 45 MPH
Approach Medium Approach Medium A green band 0 to 45 MPH
Approach Approach A green band 0 to 30 MPH
Restricting Restricting A green band 0 to 20 MPH
Yellow band at 0
Stop Signal Stop Signal A green band 0 to 20 MPH
Yellow band at 0

Conforming Cab Signal Aspects

Fixed Signal Name Conforming Cab Signal(s)
Clear Clear
Cab Speed Clear
Cab Speed
Approach Limited
Approach Medium
Limited Clear Approach Limited
Approach Medium
Medium Clear Approach Medium
Approach Limited Approach Limited
Approach Medium
Approach Medium Approach Limited
Approach Medium
Advance Approach Approach Limited
Approach Medium
Medium Approach Approach
Approach Approach
Approach Slow Approach
Slow Clear Restricting
Slow Approach Restricting
Restricting Restricting
Stop & Proceed Restricting
Stop Signal Restricting