COOMBE BISSETT & HOMINGTON
  • Home
  • Parish Council
    • Minutes
    • Agenda for Next Meeting
    • Parish Council Policies
    • Financial Data
    • Contact Your Councillors
    • Flood Alert!
    • Parish Council History
  • Neighbourhood Plan
    • Consultation
    • EVIDENCE BASE
    • Minutes of Meetings
    • Contact
  • LATEST FLOOD WARNING
  • FLOOD INFORMATION
  • Star Fest 2023
  • Village Calendar
  • CB&H FTTP Project
  • Speed Indicator Device (SID)
    • Salisbury Road
    • Blandford Road
    • Stratford Tony Road
    • Tottens Farm
    • Homington Village
  • Coronavirus Support
  • CB & H Express
    • Adverts
  • Fox & Goose
  • Coombe Bissett Stores
  • Village Halls
    • Coombe Bissett
    • Bishopstone
  • Churches
    • Coombe Bissett
    • Homington
    • Coffee Mornings-Wed
    • Chalke Valley Churches
  • Clubs
    • Badminton
    • Bellringing
    • Bowling
    • Cricket
    • Drama
    • Short Mat Bowling
    • Tennis
  • Coombe Bissett Down
    • Wiltshire Wildlife Trust
    • Friends of Coombe Bissett Down
    • CB Down Facebook Page
  • Loneliness
  • Government
    • Our M.P.
    • Salisbury City Council
    • Wiltshire Council
    • Planning
    • Village Statistics
    • Household Emergencies
  • History
    • Coombe Bissett
    • Homington
    • Photo Archive >
      • Old Photographs (1)
      • Old Photographs (2)
      • Flooding Feb 1990
      • Floods 2014
      • Floods 2015
    • Church Memorials
    • WW1 Servicemen
  • School
  • Services
    • Salisbury Hospital >
      • Hospital Website
      • Trust Membership
    • Tradesmen
    • Link Transport
    • Refuse Collection
    • Buses
  • Village Cinema
  • Village Show
  • Maps & Walks
    • Local Walks >
      • Rights of Way
    • Footpath Map
    • Walk to Salisbury
    • Google Maps
  • Home
  • Jubilee

Summary of Speed Indicator Device (SID) Activity
For the period 28th September to 30th November 2022


Picture
Location: Up until 22nd October the SID was positioned on the A354 (Salisbury Road) in the 40 mph speed limit zone.  The SID was mounted on a fixed 40 mph repeater sign-post on the left side of the road as you leave the village heading towards Salisbury. This site is referred to as the Salisbury Road, Secondary site.

​The device was moved on 27th October to Tottens Farm on the Homington Road, in the 20 mph speed limit zone.  The SID was mounted on a moveable post on the left side of the road as you leave the village heading towards Homington. This site is referred to as the Homington Road, Tottens Farm site.

Please see the Scribd documents below for details of traffic speeds and volumes during this period.
​For the latest on Community Speed Watch
Click Here
Picture
​​​For more information regarding approved SID sites in Coombe Bissett and Homington villages please refer to the SID location Power Point guide.
The last time the SID was at this location was between 11th December 2021 and 9th January 2022 when it was also facing traffic entering the village. Average speeds continue to fall, marginally. Maximum speeds are still frustratingly high. It should however be noted that the SID detection range was set at the maximum distance of 250-300 metres which means that vehicle speeds from within the de-limit zone are distorting these statistics. We have nevertheless asked CSW HQ to approve this site as a CSW location and a Traffic Survey has been requested for this purpose.
The last time the SID was at this location was between 12th January and 1st March 2022. The latest statistics for average speeds, volumes, percentage distribution and 85th percentile speeds are all very similar to those reported previously. It should be noted that the SID detection range during the latest session was still set at the maximum distance of 250-300 metres which means that vehicle speeds from within the 50 mph zone are distorting these statistics. We had considered it preferable to alert incoming drivers of their speed as soon as possible. This no longer appears to serve any purpose and we will make sure the device displays and records the speed of vehicles strictly within the 20 mph zone, in future.
​ 
​Detailed PDF reports:

Please refer to the tabs for Salisbury Road and Tottens Farm for a more detailed analysis of traffic data recorded by the SID, which is presented in PDF report format. Guidance Notes to each section of the PDF reports are provided below this summary.

Note: Our SID does not have GPS and therefore its reports are location agnostic. References in reports to Incoming and Outgoing traffic refer to traffic coming towards the device (Incoming) and traffic going past the device in the opposite direction (Outgoing).​
Wiltshire Speed Indicator Device Survey and SID Data Sharing Pilot
A Governance Forum meeting was held on 16th December.  The following is an extract of points discussed:
​
​Receiving SID Data via CSV Files and Loading into Excel spreadsheets
​Pilot is focusing on 4 types of Speed Indicator Device/Speed Cameras: Elan City Evolis; AutoSpeedWatch; Message Maker and Pandora Technologies which make up 86% of all devices installed across Wiltshire
  • A demonstration was provided showing how data from an Evolis CSV file will be loaded into a prepared Excel file which can then be uploaded into an SQL database 
  • It was agreed that the SID Data Pilot will focus on Evolis and Message Maker CSV files to start with
  • Macros will need to be developed for CSV files from Pandora Technologies devices. This is being scheduled once the Evolis and Message Maker phase of the SID Data Pilot has been completed successfully
  • It was also proposed that ASW data will need to be compartmentalised as these systems operate 'Covertly', whereas data from other SID makes is gathered 'Overtly'
 
Macro Digital Signature requirement
  • Issues reported previously appear to have been resolved
 
Qlik Sense SQL Database development
  • A demonstration of test SID data loaded into Qlik Sense, including data from Coombe Bissett's SID was provided by a Wiltshire Police IT Business Analyst 
  • An anomaly regarding 'Date' values was noted and is being investigated

Next Steps
  • These will focus on Pilot Group data load over the next 3 months and will be published once they have been agreed by the Governance Forum
​
Terms of Reference (TOR)
John Derryman has confirmed that the TOR for the Wiltshire SID Data Sharing Pilot has now been signed off by OPCC and is being presented to representatives of Wiltshire Police.


Picture

 Community Speed Watch (CSW) Update 

A total of 25 Speed Watch sessions were conducted between 27th Sept and 23rd November 2022:
Picture
Four sessions were held during National Road Safety Week which was from 14th to 20th November. I am very pleased to report that both Lynnie Reed and Gerald Bundy have been able to re-join the team.
 
Requests have been submitted to Wiltshire CSW HQ for additional CSW locations to be approved at the driveway to Wings Dairy (next to the Damory Bus Stop) at the far end of the Blandford Road and the driveway next to the old temporary bus stop on Salisbury Road, at the other end of the village.
 
While we are trying to ensure we cover as much of the community as possible, the number of sessions we can handle is dependent on the size of our team. Unless more members of the community are willing to give up a few hours a month to help with more sessions we can only commit to an average of 3 sessions a week. If you would like to find out more about Community Speed Watch and help us in our efforts to improve road safety in the parish, please don’t hesitate to either call Adrian Turnbull on 07747 620210 or email me at turnbull_adrian@hotmail.com .​

You can see how Coombe Bissett and Homington CSW’s team compares with the other CSW 96 teams across Wiltshire. Please take a look at Data prepared by CSW HQ covering CSW activity over the past 2 years which is attached here.
csw_opccdata_14072022_for_cbh.xlsx
File Size: 61 kb
File Type: xlsx
Download File

NOTE EXPLAINING INFORMATION IN PDF REPORTS
​OF
SPEED INDICATOR DEVICE (SID) ACTIVITY

COVER PAGE
The start and end dates for the period the device has been active at a location are shown on all pages.

Location: Records where the SID device was positioned during the report period and is shown on all pages.
Note: The Parish Council agreed that the SID should serve as much of the community as possible. Sites have had to be agreed by Wiltshire Council. At present there are a total of 7 approved sites. Details of exactly where each site is located are available in a separate document.

Comments: Details here show the speed limit for the site where the SID was located and the direction of traffic the SID was monitoring at that location:

- Inbound relates to traffic coming into the village
- Outbound relates to traffic leaving the village

The Comments section also states whether the sign was actively displaying the speed information to oncoming traffic or if it was in ‘Spy Mode’. Spy Mode records traffic information but does not display speeds, and is used to baseline traffic speeds at the start of the period.

PAGE TWO: AVERAGE SPEEDS
The Average Speeds graph includes two averages:

- An ‘average by time period’, which is displayed as a curve on the graph. (one curve per direction: ingoing/outgoing).
- An overall average which is displayed as a numeric value just below the graph.

The ‘average by time period’ corresponds to the arithmetic average calculated on the speeds recorded between the start/end dates. They are presented on a default time period of 30 minutes. The overall average corresponds to the arithmetic average of all the speeds included between the starting/ending dates on the time period selected for the PDF report. The software sums up all of the recorded speeds, then divides the result by the number of vehicles measured.
​ 
Note: References in the PDF report to Incoming direction and Outgoing direction relate to the direction of traffic in relation to the SID. ‘Incoming’ relates to traffic heading towards the device. ‘Outgoing’ relates to traffic going past the device in the opposite direction

PAGE THREE: MAXIMUM SPEEDS
Similar to the information for average speeds, the graphs relating to maximum speeds are displayed in curve and number format.

- The maximum speed recorded per time period are displayed in graph form (oncoming and outgoing are reflected in different colours).
- The maximum speed recorded over the entire time period is shown for each direction as a numeric value just below the graph.

PAGE FOUR: VEHICLES PER HOUR
Graphs show traffic volumes for incoming traffic (Green) and outgoing traffic (Blue) for each 24-hour period covered by the report. Total volumes are shown at the top right of the graph
​
PAGE FIVE: SPEED DISTRIBUTION FOR INCOMING TRAFFIC
PAGE SIX: SPEED DISTRIBUTION FOR OUTGOING TRAFFIC
In these sections, the recorded speeds are represented in pie chart form, and allow you to see the percentage of vehicles which have, or have not, observed the speed limit.
 
The first segment shows the percentage of vehicles which are travelling below or at the legal speed limit in that location. The second segment shows the percentage of vehicles which are travelling above the legal limit but approximately within the speed tolerances permitted by Wiltshire Police and Community Speed Watch before drivers may be sanctioned. The remaining segments show the percentage of vehicles travelling at excessive speeds.

PAGE SEVEN: PERCENTILES FOR INCOMING TRAFFIC
PAGE EIGHT: PERCENTILES FOR OUTGOING TRAFFIC
The 85th percentile is an indicator that helps illustrate the behaviour of the majority of drivers. It reflects the speed respected by 85% of motorists and is obtained by stripping out the bottom and top & bottom 7.5% of speeds recorded (i.e. strips out the extremely fast and extremely slow vehicles).

If the 85% threshold is close to the average speed recorded, this indicates that the speeds observed on a road are consistent. If it is not close to the average speed, this means that a significant proportion of drivers are above the average recorded speed.

​Note: Wiltshire Police use 85th Percentile speeds to determine whether they should conduct their own Speed Checks in any location. This is normally determined by the use of a Traffic Speed Survey which is sometimes referred to as a Metro Count. It involves two rubber strips placed across the road connected to a recording device. To-date, the Parish Council have had to request Speed Traffic Survey reports on a case by case basis, before any Police enforcement action will be considered.

coombe_bissett_and_homington_sid_location_-_website.pdf
File Size: 1188 kb
File Type: pdf
Download File

Contact the Webmaster
  • Home
  • Parish Council
    • Minutes
    • Agenda for Next Meeting
    • Parish Council Policies
    • Financial Data
    • Contact Your Councillors
    • Flood Alert!
    • Parish Council History
  • Neighbourhood Plan
    • Consultation
    • EVIDENCE BASE
    • Minutes of Meetings
    • Contact
  • LATEST FLOOD WARNING
  • FLOOD INFORMATION
  • Star Fest 2023
  • Village Calendar
  • CB&H FTTP Project
  • Speed Indicator Device (SID)
    • Salisbury Road
    • Blandford Road
    • Stratford Tony Road
    • Tottens Farm
    • Homington Village
  • Coronavirus Support
  • CB & H Express
    • Adverts
  • Fox & Goose
  • Coombe Bissett Stores
  • Village Halls
    • Coombe Bissett
    • Bishopstone
  • Churches
    • Coombe Bissett
    • Homington
    • Coffee Mornings-Wed
    • Chalke Valley Churches
  • Clubs
    • Badminton
    • Bellringing
    • Bowling
    • Cricket
    • Drama
    • Short Mat Bowling
    • Tennis
  • Coombe Bissett Down
    • Wiltshire Wildlife Trust
    • Friends of Coombe Bissett Down
    • CB Down Facebook Page
  • Loneliness
  • Government
    • Our M.P.
    • Salisbury City Council
    • Wiltshire Council
    • Planning
    • Village Statistics
    • Household Emergencies
  • History
    • Coombe Bissett
    • Homington
    • Photo Archive >
      • Old Photographs (1)
      • Old Photographs (2)
      • Flooding Feb 1990
      • Floods 2014
      • Floods 2015
    • Church Memorials
    • WW1 Servicemen
  • School
  • Services
    • Salisbury Hospital >
      • Hospital Website
      • Trust Membership
    • Tradesmen
    • Link Transport
    • Refuse Collection
    • Buses
  • Village Cinema
  • Village Show
  • Maps & Walks
    • Local Walks >
      • Rights of Way
    • Footpath Map
    • Walk to Salisbury
    • Google Maps
  • Home
  • Jubilee