Speed ​​sign

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 icts green stage [1] and Avoid a stop due reaching the intersection in a time of a red traffic light. [2]

Performance

It turns out, missing speed recommendations cause burring a bunch of vehicles releases from the green phase of the traffic light behind. This is also a bunch of vehicles. Speed ​​signs can recommend delaying or speeding up the head and tail of the bunch, or recombining them in a theoretical set speed to reach and completely pass the next signal on green without any stop and schedule it into to green wave .

A speed sign in Göttingen , Germany showing several speed recommendations.

Application

Speed ​​sings are not very popular. Typical application cases are:

  • Keep a bunch of vehicles in timing of green wave
  • Schedule a bunch of vehicles to green phase when signal timings change
  • Keep or create new bunches of vehicles
  • Prevent unnecessary stops

Funneling in Signal Phases

Speed ​​signs were used to schedule vehicles to the green phase of the traffic signal ahead, which can be explained to funnel to driving speeds into the green time signals. [3] For better performance, speed sings should be placed 600 to 1000 feet in front of the intersection.

Built Speed ​​Signs

Based on traffic lights cases:

Burghausen , displayed speeds of 30, 40, 50

    • Burgkirchener Straße: 48.169173 ° N 12.816745 ° E , 48.171148 ° N 12.820025 ° E
    • Robert-Koch-Straße: 48.16611 ° N 12.82182 ° E , 48.168259 ° N 12.823322 ° E
  • Düsseldorf , Bundesstraße 8 , displayed speeds of 60, red ahead
    • Mecumstraße: 51.200687 ° N 6.788504 ° E , 51.200688 ° N 6.788514 ° E
    • Witzelstraße: 51.200469 ° N 6.788597 ° E , 51.196937 ° N 6.79658 ° E
    • Werstener Straße: 51.19689 ° N 6.79816 ° E , 51.19651 ° N 6.79921 ° E
  • Flensburg , displayed speeds of 60, 70, 80
    • East bypass: 54.774921 ° N 9.459820 ° E , 54.761956 ° N 9.453372 ° E
  • Göttingen
    • Bundesstraße 3 (Kasseler Landstraße), 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
  • Salzgitter , Suburbs Lebenstedt and Bad
  • Telgte on Bundesstraße 64
  • Wiesbaden , Zietenring, Kurt-Schuhmacher-Ring at Santa Elisabeth Church.
  • Wulfen, Hervester Straße to Bundesstraße 58 51.712599 ° N 7.011368 ° E
Speed ​​sign in Speyerer Straße, Heidelberg, Germany
  • L562 Siegen-Seelbach, Siegen-Trupbach

As variable-message sign:

  • Berlin , at 58 Heerstraße  52.507951 ° N 13.248831 ° E
  • Heidelberg , Speyerer Straße ( 49.381972 ° N 8.653583 ° E ) and Berliner Straße, since 2009 [4]

Based on a modified radar speed in USA:

  • In Longview, Washington , 15th Ave., at East Kessler Blvd [5] (uninstalled) 46.127011 ° N 122.941054 ° W [6] Based on a radar speed sign .

Standards and Regulations

Germany:

  • Richtlinien für Lichtsignalanlagen (RiLSA) – the German Regulations for Traffic Light Systems

References

  1. Jump up^ Forschungsgesellschaft für Straßen- und Verkehrswesen (2000). Begriffsbestimmungen, Teil: Verkehrsplanung, Straßenentwurf und Straßenbetrieb . FGSV Verlag. p. 81.
  2. Jump up^ Andreas Richter (2005). Geschwindigkeitsvorgabe an Lichtsignalanlagen . DUV. pp. 33-34. ISBN  3-8244-0828-7 .
  3. Jump up^ Andreas Richter: Geschwindigkeitsvorgabe year Lichtsignalanlagen – Technische Aspekte und Nutzen volkswirtschaftlicher , retrieved 14 January 2014
  4. Jump up^ Grüne Welle in Speyerer und Berliner Straße – Tafeln zeigen year, bei welchem Tempo man “Grün” hat – Neue Signaltechnik bei der Zufahrt zum Campus , stadtblatt (Amtsanzeiger der Stadt Heidelberg), 17 year of publication
  5. Jump up^ Information Display Company Introduces timing traffic signal signs , traffictechnologytoday.com, 9 June 2009, retrieved 18 January 2014
  6. Jump up^ Manufacturers informationvs Google Streetview picture taken in September 2012, retrieved 18 January 2014

Leave a Comment

Your email address will not be published. Required fields are marked *