Land at Chesterton, Cirencester Transport Update 22 October 2014 By Mark Gimingham BA (Hons) BTP CMILT MCIHT, Partner, i-transport LLP
Purpose To provide an update on progress with the development of the Cirencester traffic model and the scope of the transport assessment for the proposed development on land at Chesterton It s a work in progress you don t get all the answers now! Welcome on going input from the community suggested transport workshop in November
Contents Experience Local Travel Characteristics Cirencester Traffic Model Model Development and Calibration and Validation Existing Conditions Cirencester Traffic Model Forecasting Years (2020 and 2031) Transport Assessment Scoping Land at Chesterton Next Steps
Experience Cambourne New Settlement, Cambridgeshire (circa 4,000 dwellings) Burgess Hill Northern Arc (3,300 plus dwellings) South Wokingham Strategic Development Location (2,500 dwellings) Boorley Green, Hampshire (1,400 dwellings) East Billingshurst, West Sussex (circa 500 dwellings) The Hub, Swindon (120,000 sqm of employment) West Filands, Malmesbury (180 dwellings) Metric House, Love Lane, Cirencester
Local Travel Characteristics 2011 Census Distance Travelled to Work - Residents 2011 Census Method of Travel to Work - Residents Chesterton Ward Chesterton Ward Cirencester Built Up Area Cirencester Built Up Area Cotswold District Less than 2km 50% 47% 24% 2km to less than 5km 5% 8% 11% 5km and over 45% 45% 65% Cotswold District Car Driver 66% 63% 72% Car Passenger 6% 6% 5% Walk 19% 23% 16% Cycle 4% 4% 2% Bus 2% 2% 1% Train 1% 1% 2% Other 2% 1% 2% 2011 Census Car Ownership per Household Chesterton Ward Cirencester Built Up Area Cotswold District No cars 16% 22% 13% 1 car / van 46% 44% 40% 2 or more cars 38% 34% 47% Average 1.33 per household 1.22 per household 1.53 per household
Local Travel Characteristics (cont.) 2001 Census Work Destinations - Residents Chesterton Ward Cirencester (all wards) 54% Swindon 13% North Wiltshire (inc. Malmesbury) 7% Cirencester Water Park 6% Cotswolds (other) 6% South Gloucestershire 3% Cheltenham 3% Stroud 2% West Oxfordshire 1% Gloucester 1% Other 3% Total 100% Cotswold Economy Study (Part 3: Retail Study, PBA, Addendum 2013) Cirencester (i.e. Tesco Extra, Kings Meadow, and Waitrose, Sheep Street) retains approximately 92% of all food/convenience shopping trips undertaken by local residents (Cirencester and South Cerney residents).
Cirencester Traffic Model Model Development and Calibration and Validation S-Paramics Model Brief Data Collection Network Development Model Calibration and Validation
S-Paramics (SIAS) Microsimulation traffic modelling system for the analysis of different types of road for a variety of purposes development planning, junction design, corridor modelling etc Simulates individual components of traffic flow and congestion and presents its output as a real time visual display for highway design and traffic management Represents actions and interactions of individual vehicles as they travel through a road network can accurately portray the variable circumstances that lead to traffic congestion Enables non traffic experts to interactively test what if scenarios and see the results in terms of real time traffic flows and congestion Consistency with other town models in Gloucestershire Lots of examples: Lydney / A48, Cheltenham, M5 junctions, Plymouth, Swindon A419 / A420 corridors etc
Model Brief Joint model with Cotswold District Council Study Area Discussed and agreed with the local highway authority (Gloucestershire County Council), the Highways Agency (highway authority for the strategic road network (A417 / A419, M4 and M5) and Cotswold District Council (the local planning authority)
Data Collection October 2013 (neutral month for traffic surveys, not during half term holidays, undertaken w/c 21 October 2014) Turning Count Locations Weekday junction turning counts and queue length surveys 07:00 10:00 and 16:00 19:00
Data Collection (cont.) Automatic Traffic Count Locations Journey time surveys Automatic traffic count data
Data Collection (cont.) ANPR Locations Automatic Number Plate Recognition (ANPR) surveys
Data Collection (cont.) Car parking data town centre car parks and car parking zones Traffic signals and pedestrian crossings Gloucestershire County Council supplied details including, timings, off sets and call frequencies of the traffic signals and pedestrian crossings in the study area Pedestrian crossing surveys Site visits! conditions, lane markings, driver behaviour, pedestrian crossings etc
Network and Traffic Matrix Development Modelled periods Weekday AM (07:00 10:00) Weekday PM (16:00 19:00) Base model road network (road alignments, lane widths, junction configuration etc) Public transport coding Signalised junctions Zoning system Vehicle types (six types: cars, LGVs, OGV1, OGV2, sprinter type buses, double deck buses) Two traffic matrix levels established Matrix 1 Car and LGV; Matrix 2: OGV1, OGV2 and buses Road hierarchy Route choice Traffic matrix development
Model Calibration and Validation Basically the process of assuring that the model reproduces real-world traffic conditions reasonably well Guidelines set out in Design Manual for Roads and Bridges (DMRB) Turning counts calibration Journey time validation Queue comparison ATC comparison Base model satisfactorily represents traffic conditions within the study area Next steps: finalise Cirencester S Paramics Local Model Validation Report and submit to Gloucestershire County Council, the Highways Agency and Cotswold District Council for comment and approval
Existing Conditions
Cirencester Traffic Model Forecasting Years Committed Developments and Transport Infrastructure Including Metric House, Love Lane; Vygon (UK) Ltd, Bridge Road, Kings Hill North and South, RAC Triangle Site, Siddington Park, Siddington Road, Brewery Court, Cirencester town centre improvements*, Cirencester Hospital* (* = still pending consideration) Background traffic growth Cotswold District Council Parking Study 2020 Forecast Year (assumed year of opening for the development) 2031 Forecast Year (to coincide with the emerging Cotswold District Local Plan to 2031)
Transport Assessment Scoping Land at Chesterton Framework for the Assessment Promoting Sustainable Transport Site Access Traffic Impact and Mitigation
Framework for the Assessment Whether: The opportunities for sustainable transport modes have been taken up depending on the nature and location of the site, to reduce the need for major transport infrastructure Safe and suitable access to the site can be achieved for all people Improvements can be undertaken within the transport network that cost effectively limit the significant impacts of the development
Promoting Sustainable Transport Mix of land uses (residential, neighbourhood centre (convenience shopping, health and community facilities), education, employment. Provides opportunities to undertake day-to-day activities including work on site reducing the need to travel off site Walking and cycling Key destinations and routes Audit Identification of necessary improvements
Promoting Sustainable Transport (cont.) Public transport Extend existing or provide new bus services Role of Kemble Station Identification of necessary improvements Framework travel plan Identify opportunities for the effective promotion and delivery of sustainable transport initiatives
Site Access Vehicular West - A429 Tetbury Road East - Wilkinson Road / Somerford Road Non Vehicular West - A429 Tetbury Road East - Wilkinson Road / Somerford Road Public Rights of Way to Cranhams Lane
Traffic Impact and Mitigation Development traffic generation, distribution and assignment Testing using the Cirencester S-Paramics Traffic Model 2020 and 2031 Forecasting Years with Development Identification of necessary improvements
Next Steps Finalise Cirencester S Paramics Local Model Validation Report and submit to Gloucestershire County Council, the Highways Agency and Cotswold District Council for approval Cirencester Traffic Model Forecasting Years Transport workshop with the community in November Transport Assessment