Stoplight Questions Log Out | Topics | Search
Moderators | Register | Edit Profile

City of Frisco Question and Answer Board » Archive » Stoplight Questions « Previous Next »

  Thread Last Poster Posts Pages Last Post
  Start New Thread        

Author Message

New member
Username: Woof

Post Number: 2
Registered: 01-2005
Posted on Sunday, February 27, 2005 - 10:12 pm:   

New illuminated street signs were recently installed on the Legacy Rd intersection stoplights (at Stonebriar, Warren, and Lebanon). Directly underneath each those street signs, on the stoplight arm, is a small white light. They turn on and off depending on the signal (green/red). Out of curiosity, what is the purpose of those lights?

Also, do our emergency vehicles have the ability to change the stoplights when crossing the intersections in an emergency?

Todd Renshaw, Chief of Police
Username: Todd

Post Number: 219
Registered: 01-2002
Posted on Monday, February 28, 2005 - 08:55 am:   

The white lights you are describing are called downstream lights. It allows a police officer to be downstream and determine when the lights facing upstream turn red.

The Fire Department is able to change the lights with the use of the opticom system which is a strobe set to a certain frequency. It changes the light to green when it detects the approaching fire apparatus.

Brian C
New member
Username: Brianc

Post Number: 32
Registered: 06-2003
Posted on Monday, February 28, 2005 - 11:09 am:   

Does the FD ever test the opticom system? Recenly on Preston (I think at Lebanon).. a fire truck could not get the signal to change.

Mack Borchardt, Fire Chief
Username: Mack_borchardt

Post Number: 15
Registered: 07-2003
Posted on Monday, February 28, 2005 - 03:37 pm:   

Brian C.

For the past several years the Fire Department has checked the Opticoms at intersections on Sunday morning. As you may know, checking these signal interrupts the traffic flow for a period of time, thus, this time of day was selected to minimize the disruption to traffic flow as much as possible. This month Frisco's Traffic Engineering Department began checking the Opticoms to further diminish the disruption to traffic. Firefighters continue to monitor the intersection signals for proper operation as the intersection is used in an emergency and a system is in place to report problems.

Occasionally, a signal will be in a phase where it takes a significant amount of time to cycle through and give a green light to the emergency vehicle.

We will check the Lebanon-Preston intersection to determine if a problem is occurring.

Thank you for your interest,

Mack Borchardt
Frisco Fire Chief
Frisco, Texas

Add Your Message Here
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Options: Post as "Anonymous"
Enable HTML code in message
Automatically activate URLs in message