View Full Version : Traffic lights
OCEAN WUN ZERO
12th Sep 2007, 15:36
Have any of you very clued up ppruners got ops experience on traffic lights that are required to be on/off due to highsided vehicles that infringe the CAP168 approach and take off slopes on a road near the boundary fence.
Specifically is it ON for a/ just jets b/ only IFR ( even a 150) c/ all traffic
Answers on a post card
Thanks in advance
12th Sep 2007, 16:05
You want to ask those who work at LXGB - they've a main road running across the middle of their runway!!!:eek:
Worked at one with a road running across one of the thresholds, but they're on for all traffic.... what are you after?
12th Sep 2007, 16:17
One airport in the sunny SW used to have a road that went past the threshold. LLZ for the other end was in a field on the other side of the road. Level crossing style lights on the road. Lots of rules for when the lights should be switched to red. Some to protect the obstacle clearance surfaces, some to protect the LSA and some to protect from jet blast.
12th Sep 2007, 18:18
Liverpool has, though no one takes any notice of them! They are switched on for all 27 arrivals; heavy 27 departures; heavy 09 departures and acft departing 09 who are operationally impaired; and heavy 09 arrivals and 09 arrivals in an emergency. Probably missed one or two as well.
12th Sep 2007, 18:29
Not EGDR by any chance?
12th Sep 2007, 19:10
Cambridge and Brize both have them but I haven't seen them used. I assumed they were for CATII/III approaches but that's an assumption based on ignorance...
12th Sep 2007, 19:13
Also at Humberside - permanantly set at green to attract the aeroplanes -(they used to have barriers accross the road, until someone lowered them too late one day and they sailed off into the sunset on the back of a truck. I don't work there anymore.)
OCEAN WUN ZERO
12th Sep 2007, 19:49
RAC/OPS you dont have any more specific info do you( MATS pt 2 entry too much to hope for)
particularly if they are on for all IFRs or is it a size thing(pun)
12th Sep 2007, 20:35
Not EGDR by any chance?Nope, EGGD.
12th Sep 2007, 21:13
Bournemouth has them - never seen them used though
13th Sep 2007, 02:11
Forget Lorries. London City has to stop all arrivals on RWY28 when a Large ship passes by. Only happens once or twice a year though, luckily.:eek:
13th Sep 2007, 04:22
Forget lorries and ships.
Wait until you have a minature signal box in the tower and an active railway line crossing your main runway.
13th Sep 2007, 05:49
Where in the hell is that!:eek:
13th Sep 2007, 06:10
Railway line at Eglington (didn't there used to be one at Filton, too?)
Southend has lights and barriers for the road in the 06 undershoot.
13th Sep 2007, 08:40
I don't quite understand the reason for the original question. If the installation of road traffic lights is being mooted, then surely you must know why they are being installed? Therefore, they will be operated to protect aircraft (and vehicles) as appropriate, whether it be to safeguard an ILS signal, the OCS for either instrument or visual approaches/departures or potential jet blast/prop wash. The one factor that would need to be specified is at what stage they would need to be selected relative to an imminent aircraft movement, e.g. to allow for slowest (cyclists/pedestrians) and biggest (high-sided vehicles) to clear the area between the lights in sufficient time. This was graphically illustrated at HH some good few years ago when a little old lady in a mobility buggy (or whatever the PC term is) was bowled over by the propwash of a C130 departing rwy 35 which at that time attracted traffic lights on the adjacent main road! Mind you, the same position was later the site of a Cessna twin shooting through the boundary hedge and passing behind the cars waiting at the red lights - he would have written off one or two if a longer queue had built up. Fortunatly there was no legal action in either case for either damage or laundry bills.
14th Sep 2007, 21:51
Lights at Liverpool on for any a/c making an approach to rwy 27, to protect the RESA.
45 before POL
14th Sep 2007, 23:20
As said before Brize and Bournemouth have them....but Gib has lights for traffic across the middle.....Used to be closed at 10miles finals for pedestrians and 6 miles for vehicles,......not sure what it is now though........however not good when a german tourist turns left drives down the middle of the runway to take pictures of the rock from the threshold as the barriers go down!!:ooh::ooh: