There are two main lane closure strategies for Interstate highway work zones, crossover and partial lane closure. Depending on the situation one or the other strategy may be more desirable. However, little research has been done to develop a systematic method for selecting appropriate lane closure strategies. The selection of appropriate lane closure strategies at Interstate highway work zones is discussed.
This report is the third of a six-volume final report presenting the findings of the part of the research work dealing with bridge traffic safety evaluation. A procedure was developed that can be used to determine the traffic safety index of a bridge on the basis of a set of contributing factors related to bridge, approach roadway and environmental conditions.
This volume is the sixth of a six-volume final report and it presents the results of the research on bridge performance analyses and the development of an optimization model for bridge project selection.
This study was conducted to estimate the extent of travel and attendant fuel sales attributable to out-of-state vehicles on Indiana highways.This information would be useful in making decisions regarding the source of additional highway revenue by raising motor fuel taxes or using funds from the general revenue source;if the extent of out-of-state travel and fuel sales is significant, then the additional motor fuel taxes might be more equitable than the diversion of funds from the general revenue source which have come only from Indiana tax payers.The data for the study was collected from a field survey conducted throughout the state.The field survey included highway vehicle counts, and survey of vehicles at service stations and truck weigh stations.Data from secondary sources was also used to supplement the field data.Appropriate data was collected in terms of four regions, Northwest, Northeast, Southwest, and Southeast, and the highway sections sampled included Inter- state, 4-Lane and 2-Lane routes in each of the four regions.The analysis was conducted by highway type and by the type of vehicle.The sample data was expanded for statewide representation by using extrapolation factors developed in the study.Separate computations were done for automobiles, pick-ups and vans, and trucks.The analysis indicated that in 1979 the total vehicle-miles of travel 6 on Indiana highways would amount to 43,141 x 10 and the total out-of-state travel would be 13,663 x 10 vehicle-miles or 32% of total travel.The corresponding fuel sales to out-of-state vehicles in Indiana would be 961.5 x 10 gallons representing about 31% of total expected motor fuel sales in Indiana in 1979 for highway purpose.The results clearly establishes the significance of Indiana as a cross- roads state, and it is therefore recommended that any additional source of highway revenue should come from motor fuel taxes and not from general revenue.Table 16: Motor Fuel Consumed In Indiana In 1979
This report presents the work plan for the development of a highway safety management system for Indiana. It identifies major activities and responsibilities for the development and implementation of a formal, statewide, interactive safety decision-making process. The safety management system of Indiana is perceived as a continuous process of considering all opportunities to improve highway safety in all phases of highway planning, design, construction, maintenance and operation. The primary emphasis is on coordination of activities at various levels and on the development of a common information data base that can be used for selecting and implementing effective highway safety strategies and projects.
This research provides a study on work zone impact analysis. In case of multiple road closures, the network approach is used to find an effective scheduling such that the total user delay is reduced. A dynamic model for analyzing the work zone impact during the period when network is in transition state is also developed. A salient feature of the dynamic model is drives’ perception updating model, which incorporates availability and the quality of information as perceived by drivers.
298B.7 XV111 routine maintenance on timing of pavement resurfacing.An integrated data base was developed from selected pavement sections from the Indiana state highway system including information on pavement routine maintenance, pavement roughness, and pavement characteristics.The data were collected based on pavement contract sections.The results indicated that deterioration in pavement surface condition in the northern region was higher than that in the southern region.However, maintenance effectiveness was found, in general, higher in the northern region.Also, the effectiveness of patching and joint and crack sealing was found higher than that of patching alone.In addition, maintenance effectiveness for pavements that is followed by Chapter 7 which presents an analysis of the effects of routine maintenance expenditure level on pavement service life.Finally, Chapter 8 contains the summary of proposed approach and major findings of the study.
Facility preservation generally refers to the set of activities that are carried out to keep a facility in usable condition until the next reconstruction activity. For fiscal planning and programming, it is necessary to know the expected costs of preservation projects and how long they would last. Such information, coupled with minimum standards and facility inventory data enable estimation of overall monetary needs for bridge and pavement preservation, and would assist INDOT in undertaking appropriate programming and attendant financial planning over the long term. However, detailed engineering analyses are not possible every year because of the time and effort involved, therefore simple procedures to help estimate annual pavement and bridge preservation needs are useful for long-term fiscal planning. The study methodology consisted of first undertaking a full analysis based on engineering principles and detailed work in order to determine pavement and bridge needs for a period of time. Then simple procedures to estimate yearly pavement and bridge preservation costs were developed and the results were compared to the detailed engineering needs. Deterioration and cost models to establish engineering needs were developed using an array of statistical techniques including analysis of variance and regression analysis. Using the deterioration models, system inventory and minimum standards, the level of physical needs was determined for the entire pavement and bridge network over the analysis period. Finally, using the identified physical needs and developed cost models, the monetary needs were estimated. An age-based approach (that considers fixed time intervals instead of deterioration trends and minimum standards) was used for the bridge preservation needs. Based on the historical expenditure records and the amount of work performed in the past, simple regression models were developed to estimate future annual pavement and bridge preservation needs. The results obtained proved to be consistent with the engineering analysis.
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