Viewing inquiries for 07-309904

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Inquiry #1:
Here’s my question regarding SFP quantities:

The Electrical Quantities EQ-1 summary page provides SFP quantities by distance, but not by speed. Can CalTrans please breakdown the SFP quantities required by both speed and distance?

SFP Type Quantity
100Base-LX
1000Base-LX/LH
1000Base-ZX
10GBASE-SR
10GBASE-LR
10GBASE-ER
10GBASE-ZR
(question 2)
Which cabinets have AC Power and which cabinets have DC Power?

(question 3)
Plans call out for the use of 60 strand single mode fiber, is the existing fiber that runs into the cabinet now a 60 strand SMFO. Can we use a 72 strand as an alternative?

Inquiry submitted 03/30/2017

Response #1:Below are answers for the three questions:

Question #1:

SFP Type Quantity
100Base-LX 85 (E-1) + 80 (E-2) + 68 (E-3) = 233
1000Base-LX/LH 10 (E-4) = 10
1000Base-ZX 4 (E-1) + 4 (E-2) + 2 (E-5) = 10
10GBASE-SR 0
10GBASE-LR 0
10GBASE-ER 0
10GBASE-ZR 0

Question #2:

Only AC powers in all cabinets.

Question #3:

The existing fiber cable is 60SMFO. DO NOT use 72SMFO as an alternative.

Response posted 03/30/2017




Inquiry #2: Under Section 87-21.01D(1)(b) Wireless Magnetometer Vehicle Detection System:

The Spec states: Accuracy of the WMVDS system must be verified by comparing the WMVDS vehicle counts to recorded
video image counts for the same period. Accuracy testing must be done at 5 percent of the WMVDS
locations as selected by the Engineer.

We would like you to confirm that accuracy testing as described applies to 5 percent of the locations where installed and not 5 percent of the overall VSN count. In other words, if there are (91) intersections that VSN's are being installed then the contractor would perform accuracy testing at 5 percent of those locations which equates to 4.55 intersections.

Inquiry submitted 04/05/2017

Response #1:The accuracy testing is as described in the specifications which is 5 percent of the WMVDS locations (91) as selected by the Engineer.
Response posted 04/05/2017




Inquiry #3: In the specs for Ethernet Switch Type 1, Caltrans makes reference to an “Expansion Module” that would have “8 additional downlink 10/100 Mbps 8P8C Ethernet ports and/or 8 additional 100Mbps multimode fiber ports”. For the 97 total Type 1 switches, how many would require Ethernet ports and how many would require fiber ports?
Inquiry submitted 04/05/2017

Response #1:Each Type 1 switch must have the feature to add an “Expansion Module” with “8 additional downlink 10/100 Mbps 8P8C Ethernet ports and/or 8 additional 100 Mbps multimode fiber ports” if required in the future.
Response posted 04/05/2017




Inquiry #4: The spec specifically mentions that the video decoders must match the manufacturer of the encoders BUT the encoders are not mentioned anywhere in the documentation provided. Can you confirm what encoders are currently installed please?
Inquiry submitted 04/06/2017

Response #1:The video encoders are NEW. The spec is under section 87-21.02D, page 24 of the Special Provisions.
Response posted 04/06/2017




Inquiry #5: Question #1:
Who is responsible for verifying that the communication system is functioning under “normal” conditions as outlined in Section 87-1.01D(2)(a)(iii)(B) Data Link Testing?

Question #2:
If the communication system is NOT functioning under “normal” conditions as outlined in Section 87-1.01D(2)(a)(iii)(B) Data Link Testing, then who is responsible for any necessary repairs or other remediation to return it to “normal” conditions?

Question #3:
Who is responsible for providing the list of IP addresses for the communication system elements (CCTV, TMS, RMS) that we need to ping per Section 87-1.01D(2)(a)(iii)(B) Data Link Testing?

Inquiry submitted 04/06/2017

Response #1:Answer #1: From the field elements to the IP Nodes, it’s the Contractor’s responsibility for verifying that the communication system is functioning under normal condition. From the Hubs to the LARTMC, it’s the Department’s responsibility.

Answer #2: From the field elements to the IP Nodes, if the communication system is not functioning under normal condition, it’s the Contractor’s responsibility for any work necessary to return it to “normal” condition. From the Hubs to the LARTMC, it’s the Department’s responsibility.

Answer #3: The Department will provide the list of IP addresses.
Response posted 04/06/2017




Inquiry #6:
Section “87-1.01D(2)(a)(iii)(B) Data Link Testing” states that we are to

“…’ping' each element (CCTV, TMS, RMS) using test computer…”

and recent responses to questions indicate that it is the contractor’s responsibility to ensure ‘normal’ operating conditions of the network “From the field elements to the IP Nodes”

We are unable to locate any field elements identified as “TMS” or “RMS” on the project plans.

Are there any such devices on this project? If so, please provide network details necessary to identify their location and how they are connected to the IP Nodes.

All of the CCTV cameras listed on the plans appear to be existing analog cameras. It is not possible to “ping” an analog camera. Please clarify what is being tested via “ping”.








Section “87-1.01D(2)(a)(iii)(F) Final Acceptance” states

“Upon completion of acceptance tests, connect all equipment to form a fully operational system.”


Besides ensuring operation of the individual devices, a “fully operational system” would involve utilizing existing systems, switches, network configurations and other soft and hard infrastructure that is outside of the scope of this RFB. The provided plans offer no instructions for switch or field device network configuration for even local network operation let alone their integration into an existing network infrastructure.

Please provide IP addressing, netmask, gateway, and all network information details that would be necessary to properly configure the field devices and switch equipment specified in this RFB to integrate into the existing network infrastructure to form a fully operational system.

Inquiry submitted 04/07/2017

Response #1:Answer #1: There are no TMS or RMS on this project.

Answer #2: The existing analog cameras will be IP ready once the new video encoders and switches are installed. The Department will provide the list of IP addresses.

Answer:#3 The Contractor is responsible for connecting all equipment to form a fully operation system from the field elements to the IP Nodes and Hubs. All network information details, including IP addresses, that would be necessary to properly configure the field elements and new equipment to integrate into the existing network infrastructure to form a fully operational system will be provided by the Department after the equipment is purchased.
Response posted 04/07/2017






The information provided in the responses to bidder inquiries is not a waiver of Section 2-1.07, “JOB SITE AND DOCUMENT EXAMINATION” of the Standard Specifications or any other provision of the contract, nor to excuse the contractor from full compliance with the contract. Bidders are cautioned that subsequent responses or contract addenda may change a previous response.