Presentation on theme: "Planning for Urban Freight Movement By Arun Chatterjee The University of Tennessee, Knoxville."— Presentation transcript:
Planning for Urban Freight Movement By Arun Chatterjee The University of Tennessee, Knoxville
Scope of My Presentation Traditional planning & engineering oriented Vehicle-based analysis Internal & through movements of trucks Tools for planning and forecasting Examples of common issues and opportunities Practical difficulties
Internal Movement- Modes & Vehicles Nearly 100% trucks Majority SU and trucks and vans of different types Some large combination trucks
Services of Different Hierarchy PUD between major centers, e.g., an airport and a hub center of UPS/FedEx: large combination trucks PUD of containers from one rail terminal to another, e.g., in Chicago: large trucks PUD between warehouses and offices/stores: medium size trucks and vans PUD between a break-bulk terminal and offices/homes: small trucks and vans
Service Vehicles Service vehicles of plumbers, electricians, etc. (Should these be treated as freight vehicles?)
Types of Commodities Construction materials Food products Consumer goods: TV, furniture, etc. Petroleum Small packages Mail, etc.
Long-Range Planning Process of MPOs 20-year planning horizon Relies on forecasting models Two major components – Land use forecasting – Travel forecasting How is freight transportation treated?
Land Use Planning and Forecasting Does it address truck terminals and their locations- now and in the future? Does it address warehousing and their locations - now and in the future? How are the other freight generators such as seaports, airports, and rail-truck intermodal yards treated? (Expansion & relocation needs) Is access to freight facilities examined?
Travel Forecasting Models Travel forecasting models constitute a major component of the planning process Four-step modeling procedures primary focus has been on passenger trips by automobile & transit Research on travel surveys and mathematical models commonly focus on person/passenger trip making and mode choice
Truck Travel Forecasting Models Only a few MPOs are developing these models Lack of good data on truck travel Need for truck trip surveys and truck counts (by types)
Truck Trip Modeling: Questions to Be Addressed How to classify truck trips-- size, type of service? Trip generation models for productions and attractions: variables to use – employment, or commodity oriented? Trip distribution- trip based or tour based models? (Pick-up & delivery trucks use trip chaining/tours.)
Truck Trip Modeling- Questions(Cont.) Traffic assignment - need a separate network for large trucks? If auto trips and truck trips are assigned separately, how to account for their combined impact on capacity and speed? Should have the ability to identify truck trips even after combining with auto trips for assignment for truck route planning.
Special Techniques for Developing a Truck Trip O-D Matrix An O-D survey for truck travel is expensive and complex Mathematical techniques for creating truck trip matrix that can replicate truck counts – Need truck counts at strategically selected locations – Need information on truck trip generators and truck prohibitions – Baltimore area MPO recently utilized this approach
Problems & Opportunities Long-range & short-range How to identify these? Role of freight advisory committees for identifying current problems and opportunities
Planning Oriented Opportunities Providing off-street loading docks/space for buildings: zoning ordinance should specify requirements
Planning Opportunities (Contd.) Developing freight terminal complexes – transportation parks (or freight villages): land use plans should provide for these.
Traffic Engineering Oriented Opportunities Curbside loading zones Improvements along routes commonly used by large trucks Intersection improvements at locations with heavy truck use
Cut-Outs for Loading Zones Cut-outs/turn- outs of wide sidewalks for loading zones
Curbside Loading Zones Location Length and marking Hours of operation Time limit for turnover Different zones for different types of vehicles Enforcement
Curb Space Management Competing users of curbside – Buses – Taxi cabs – Service vehicles – Trucks of different types Who gets priority?
Through Movement– Common Problems High volume of heavy trucks on arterial highways – noise, traffic congestion, safety concern, etc. Lane use restrictions for trucks Rail-highway grade crossings – safety
Difficulties to Overcome General public has a negative attitude toward freight service providers Elected officials may not give high priority to freight vehicles (freight does not vote) and freight planning Need cooperation of private freight companies, but they want fast action and are skeptical about public agencies
Concluding Remarks Use a practical approach Address major concerns and issues of both public and private sectors Need to implement a few strategies quickly to gain confidence of private sector Need to publicize the case/need for freight transportation using news media, chamber of commerce, trade associations, etc.
References Urban Goods Movement, Ogden, K. W., Ashgate Publishing Company, 1992 Characteristics of Urban Freight Systems, Wegmann, Chatterjee, Lipinski, Jennings and McGinnis, A Report Prepared for FHWA, DOT- T-96-22, 1995 Urban Transportation Planning for Goods and Services, Dennis Christiansen, TTI, A Report Prepared for FHWA, 1979
References (Contd.) Truck Trip Generation Data, Fischer, M.J. and Han, M., NCHRP Synthesis 298, TRB, 2001 Chatterjee, Staley, and Whaley, Transportation Parks -- A Promising Approach to Facilitate Urban Goods Movement, Traffic Quarterly, April 1986 Chatterjee, A., et al, Goods Movement Planning for Small and Medium Size Urban Areas, Transportation Engineering, ITE, November 1977
Thanks Robert Gorman, FHWA My consultants for this presentation: Ted Dahlburg, Gerald Rawling, Jocelyn Jones, and Michael Fischer.