Speed sign
A speed sign is a special traffic light, variable traffic sign or variable-message sign giving drivers a recommended speed to approach the next traffic light in its green phase[1] and avoid a stop due reaching the intersection in a moment of a red traffic light.[2]
Built Speed Signs
Germany
Based on traffic lights cases:
- Burghausen, displayed speeds of 30, 40, 50
- Düsseldorf, Bundesstraße 8, displayed speeds of 60, red ahead
- Mecumstraße: 51°12′02″N 6°47′19″E / 51.200687°N 6.788504°E, 51°12′02″N 6°47′19″E / 51.200688°N 6.788514°E
- Witzelstraße: 51°12′02″N 6°47′19″E / 51.200469°N 6.788597°E, 51°11′49″N 6°47′48″E / 51.196937°N 6.79658°E
- Werstener Straße: 51°11′49″N 6°47′53″E / 51.19689°N 6.79816°E, 51°11′47″N 6°47′57″E / 51.19651°N 6.79921°E
- Flensburg, displayed speeds of 60, 70, 80
- Göttingen
- Bundesstraße 3, Kasseler Landstraße: 51°31′48″N 9°53′40″E / 51.529865°N 9.894369°E, displayed speeds of 40, 50, 60
- Kreuzbergring, displayed speeds of 30, 40, 50 km/h
- Haßloch on L532 between Lachener Weg and Rennbahnstraße, displayed speed of 40 km/h
- Neu-Anspach, 4 signs, displayed speed of 40 km/h
- Theodor-Heuss-Straße: 50°18′15″N 8°30′59″E / 50.304028°N 8.51627°E and the next interchange to town
- Adolf-Reichwein-Straße: 50°18′00″N 8°30′22″E / 50.299930°N 8.506117°E and the next interchange to town
- Salzgitter, Suburbs Lebenstedt and Bad
- Telgte on Bundesstraße 64
- Wiesbaden, Zietenring, Kurt-Schuhmacher-Ring at Santa Elisabeth Church.
- Wulfen, Hervester Straße to Bundesstraße 58: 51°42′45″N 7°00′41″E / 51.712599°N 7.011368°E
- L562 Siegen-Seelbach, Siegen-Trupbach
As variable-message sign:
- Berlin, at 58 Heerstraße: 52°30′29″N 13°14′56″E / 52.507951°N 13.248831°E
- Heidelberg, Speyerer Straße: 49°22′55″N 8°39′13″E / 49.381972°N 8.653583°E and Berliner Straße, since 2009[3]
- Stuttgart, on Bundesstraße 14 (out of order since speed limit was reduced due "particulates alert")48°47′18″N 9°11′27″E / 48.788316°N 9.190921°E
In Canada as "Prepare to Stop"-Sign and Flashing lights
- On Trans-Canada Highway in Salmon Arm, British Columbia on least four traffic lights.[4][5][6][7]
Based on a modified radar speed sign in USA:
- In Longview, Washington, 15th Ave, at East Kessler Blvd[8] (uninstalled) 46°07′37″N 122°56′28″W / 46.127011°N 122.941054°W[9] Based on a radar speed sign.
Standards and Regulations
Germany:
- Richtlinien für Lichtsignalanlagen (RiLSA) – the German Regulations for Traffic Light Systems
References
- ^ Forschungsgesellschaft für Straßen- und Verkehrswesen (2000). Begriffsbestimmungen, Teil: Verkehrsplanung, Straßenentwurf und Straßenbetrieb. FGSV Verlag. p. 81.
- ^ Andreas Richter (2005). Geschwindigkeitsvorgabe an Lichtsignalanlagen. DUV. pp. 33–34. ISBN 3-8244-0828-7.
- ^ Grüne Welle in Speyerer und Berliner Straße – Tafeln zeigen an, bei welchem Tempo man „Grün“ hat – Neue Signaltechnik bei der Zufahrt zum Campus, stadtblatt (Amtsanzeiger der Stadt Heidelberg), 17. year of publication
- ^ https://www.google.de/maps/@50.7113606,-119.228549,3a,52y,207.99h,98.84t/data=!3m6!1e1!3m4!1sfZgyW7s8fJMjkw_DBrKcQ!2e0!7i16384!8i8192
- ^ https://www.google.de/maps/@50.7072296,-119.2490992,3a,60y,295.03h,114.73t/data=!3m6!1e1!3m4!1ssU0uhO56g718tva14cg6Eg!2e0!7i16384!8i8192
- ^ https://www.google.de/maps/@50.7017319,-119.2800059,3a,75y,235.24h,96.49t/data=!3m6!1e1!3m4!1sk8OjsPKeBJ681HeIxPr8cA!2e0!7i16384!8i8192
- ^ https://www.google.de/maps/@50.6926479,-119.3182746,3a,48.3y,278.04h,90.5t/data=!3m6!1e1!3m4!1svIhzf4ZGjPiXI8VRnxxMTw!2e0!7i16384!8i8192
- ^ Information Display Company introduces traffic signal timing signs, traffictechnologytoday.com, 9 June 2009, retrieved 18 January 2014
- ^ Manufacturers information vs Google Streetview photo taken in September 2012, retrieved 18 January 2014