Railroad crossing (international)
Signal-ID: 73 (hex: 0x49)
Using this signal configuration, the following signals can for example be operated:
- Railway crossing alternate flash, triangular, horizontal with 3 or 2 lamps
- Railway crossing alternate flash, triangular, vertical with 3 or 2 lamps
- Railway crossing alternate flash, rectangular with 3 or 2 lamps
- Railway crossing flash, single
- Railway crossing alternate flash, double
- Railway crossing alternate flash, round
- Railway crossing trackside signal for traction unit drivers
Terminal assignment
1 - Red LED
Alternate flash (railway crossing secured)
2 - Red LED
Alternate flash (railway crossing secured)
3 - White LED
Optional, operational readiness (basic position)
4 - Yellow/White LED
Optional, trackside signal for traction unit driver (railway crossing secured)
5 - Output
Optional connection C5 encoder signal for crossing gates closed
6 - Output
Optional connection C6 encoder signal for crossing gates closed (double)
7 - Output
Optional connection O7 encoder signal for crossing gates open
8 - Output
Optional connection O8 encoder signal for crossing gates open (double)
Signal aspects
Idle
DCCext
0
Trigger
1R
Basic position
The railway crossing is not secured.
Any gates are opened.
In some countries, depending on the Epoch, a white flashing light indicates
operational readiness to road traffic.
Check
DCCext
1
Trigger
2G
Lamp test (optional)
On some automatically-saved prototype systems (D), both red lamps light up at the
start to test the function. Only if both lamps function does the alternate flash
begin as well as the appropriate signalling at the trackside signal for the
traction unit driver.
Switches automatically to the signal aspect number 3 (alternate flash)
Closed
DCCext
16
Trigger
1G
Alternate flash
The railway crossing is secured.
Any gates are closed.
On some systems, a yellow (CH) or white (D) flashing trackside signal indicates to
the traction unit driver that the railway crossing is cleared for the train.
Blinking
DCCext
-
Trigger
-
(Used internally in the decoder for the alternate flash)
Opening
DCCext
2
Trigger
2R
Open (optional)
The crossing gates are opened, the lamps are switched to dark.
Switches automatically to the signal aspect number 1 (basic position)
Delay/Idle
DCCext
3
Trigger
3R
Delayed basic position (optional)
On some prototype systems (CZ), the lamps are switched to dark if the train is
still located on the approach route of the opposite direction after
switch-off.
Any gates are opened.
Switches after a few seconds automatically to signal aspect number 1 (Basic position)
Caution
DCCext
71
Trigger
4G
Warning light (optional)
The third light ("post Hixon-amber light", UK) is first switched on for 4
seconds.
Then it switches off and the alternate flash is activated.
Switches automatically to the signal aspect number 3 (alternate flash)
Dark
DCCext
66
Trigger
4R
Dark switching (optional)
All lamps are switched off.