INTELLIGENT TRANSPORT SYSTEMS Presentation by Chris Gladwyn Traffic Control Systems Hertfordshire Highways www. hertsdirect. org
Aims and Objectives • Integrate new and existing Network Management Systems in Hertfordshire • • Future proof technology Actively manage HCC Network Integrate HCC, HA & neighbouring LA strategies Build Integrated Traffic Control Centre www. hertsdirect. org
Hertfordshire ITS Projects • • Urban Traffic Control system (UTC) renewal • Automatic Vehicle Location (AVL) / Real Time Passenger Information (RTPI) • • Automatic Number Plate Recognition (ANPR) Urban Traffic Management & Control (UTMC) common database Variable Message Signs (VMS) Car Park Guidance Signs (CPGS) Closed Circuit Television (CCTV) www. hertsdirect. org
UTC Renewal Existing instation system • • • Supplied by Peek Traffic Ltd in 2000 Owned by HCC Identified as life expired System unstable, 85 software patches Does not have functionality to meet future aspirations and LTP objectives www. hertsdirect. org
Overview of UTC Architecture www. hertsdirect. org
UTC Renewal Outstations • • • Replace existing legacy Outstation Transmission Units (OTU’s) Bring compliance with UTMC principles Embracing the efficiencies of IP transmission www. hertsdirect. org
UTC Renewal - Benefits • • The UTC system runs SCOOT (Split Cycle Offset Optimisation Techniques) software. SCOOT achieves an average saving in delay of about 12% over validated Fixed Time Plans. Additional savings of 3% per year are likely for every year that a Fixed Time Plan ages. Communication costs reduced by approx. 60% www. hertsdirect. org
UTC Renewal Timescales • • Contract award September 2010 System delivered February 2011 www. hertsdirect. org
UTMC Common Database (CDB) CDB is the UTMC central hub, enabling • A coordinated, centralised approach to monitoring and managing traffic • A traffic and travel website • Distribution of transport information via the media (radio/TV/Smart phones) • A consolidated, single user interface • Close co-ordination with adjoining Local Authorities and the Highways Agency Contributes to a number of LTP objectives www. hertsdirect. org
Existing HCC System Architecture www. hertsdirect. org
Overview of UTMC Architecture www. hertsdirect. org
UTMC CDB – Interdependencies • • • Common Database interfaces with all ITS Systems Web portal may require links to corporate networks Council staff may want access to functions of the CDB www. hertsdirect. org
UTMC CDB Time Scales Contract award October 2010 System delivered February 2011 www. hertsdirect. org
AVL/RTPI - Objectives • • Provide reliable real-time information to passengers through a variety of systems and communications media Provide a voice and data communications platform Enable bus priority at traffic signals Provide a vehicle location and control system Be compatible with AVL/RTPI systems operating in other counties and with other transport providers Enhance passenger security Provide information to drivers to aid timekeeping www. hertsdirect. org
AVL/RTPI Architecture www. hertsdirect. org
AVL/RTPI - Benefits • • Modal shift – +1% increase in passengers across London – +5% in Bristol and Liverpool – +8% in East Kent – +28% Leicester Benefits – 9 seconds reduction of delay per bus per junction in London at VA sites with traditional priority – 10 to 20+ seconds reduction of delay per bus per junction in Leeds at VA sites with intelligent priority – 18% reduction in journey time on a route in Gateshead www. hertsdirect. org
AVL/RTPI Time Scales Contract award March 2010 System delivered February 2011 -2016 www. hertsdirect. org
Automatic Number Plate Recognition (ANPR) Journey Time Monitoring System (JTMS) • • Journey Time Measurement using ANPR provides traffic data by identifying the same vehicle at two or more points in a road network from the recognition of the vehicle's number plate. ANPR cameras are strategically deployed to capture number plates along road networks providing real time monitoring, which in turn formulates travel times along the road network. www. hertsdirect. org
ANPR/JTMS - Benefits • • Live monitoring of the effectiveness of traffic management schemes Early warning of traffic incidents Improve journey time reliability Reduce disruption caused by major incidents Provide alternative route advice to minimise the effect of congestion and incidents Minimise delays due to roadworks Influence road users' decisions before they set out on a journey about route, time and means of travel Reduce the effects of congestion www. hertsdirect. org
Variable Message Signs (VMS) • • Provision of information in a timely manner Local incident management Reduction in delay Supporting diversion routes and controlling traffic on these routes www. hertsdirect. org
Car Park Guidance Signs • Excess queues at car parks; • Congestion on the surrounding road network; • Poor air quality Provides greatest benefit when demand for off-street parking is approximately equal to supply www. hertsdirect. org
CCTV • • Incident detection and management Provide traffic information through various media services Manage traffic in urban areas through the use of an UTMC system Monitor weather conditions of highway www. hertsdirect. org
INTELLIGENT TRANSPORT SYSTEMS Questions ? Thank you www. hertsdirect. org
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