GETTING THE BALANCE RIGHT: Breaking the Link Between Economic and Traffic Growth Graham Riley Influencing Travel Behaviour Team

The Highways Agency Agency for Department For Transport Responsible for Strategic Road Network In England c.8,000 km of: Motorways Motorways Major trunk roads Major trunk roads

Traffic volume Development traffic Network capacity Meeting Demand?

Background growth Network capacity Development traffic Traffic demand 10 years Required capacity 10 years after full opening of the development The Traditional approach

1 - Build new capacity 2 - Technology Improvements 3 - Access Management 4 - Impact Avoidance Four basic methods of accommodating growing demand:-

Background growth Network capacity Development traffic Traffic demand 10 years The Traditional approach

Background growth Network capacity Development traffic Traffic volume The Traditional approach

Background growth Network capacity Traffic congestion / unsatisfied demand Many network capacity improvements are not feasible

Minimise new traffic generation Reduce / reverse background growth Constrain overall traffic within manageable, acceptable limits Where capacity headroom is very limited, we need to manage demand:-

Traffic growth Network capacity Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Car sharing / car clubs Car sharing / car clubs Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Car sharing / car clubs Car sharing / car clubs Parking limits Parking limits Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Car sharing / car clubs Car sharing / car clubs Parking limits Parking limits Access management Access management Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Car sharing / car clubs Car sharing / car clubs Parking limits Parking limits Access management Access management plus much more? plus much more? Constraints to traffic generation: Travel Plans

Traffic growth Network capacity Public Transport Public Transport Car sharing / car clubs Car sharing / car clubs Parking limits Parking limits Access management Access management plus much more? plus much more? Constraints to traffic generation: Travel Plans

Innovative Planning Guidance New Guidance on Transport Assessment (April, 2007) New Guidance on Transport Assessment (April, 2007) Primary Mitigation – Travel Plans Primary Mitigation – Travel Plans Secondary Mitigation – Physical Measures Secondary Mitigation – Physical Measures Developments must satisfy no worse off condition! Developments must satisfy no worse off condition!

ImpactAvoidance AccessManagement TechnologyImprovements CapacityImprovements The Highways Agencys approach to spatial planning

The Trip Credit approach

Trip Credit interventions: Minimise impacts from new developmentMinimise impacts from new development Create headroom from neighbouring existing developmentsCreate headroom from neighbouring existing developments Aim to achieve traffic neutrality (or as near as possible)Aim to achieve traffic neutrality (or as near as possible)

New Employment Existing Employment Existing Housing Existing Employment

A Real Working Example…

New development with 215 new employees Estimated 182 two way trips at am peak Estimated 182 two way trips at am peak In-boundary travel plan measures reduce trips to 136 (25% trip saving) In-boundary travel plan measures reduce trips to 136 (25% trip saving) Area wide travel plan measures save a further 170 trips Area wide travel plan measures save a further 170 trips Net trips from site -34! Net trips from site -34!

Thank You Graham Riley Regional Programme Manager: Influencing Travel Behaviour Network Strategy (North of England) Lateral, 8 City Walk, Leeds, LS11 9AT Tel Mob Find out more on the HA website: