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This research involved a study of the feasibility of using the patterns of work trips alone to represent the patterns of travel for all purposes in an \«?bat area. Further, the feasibility of usin^peak hour travel patterns to represent those of the entire day v&s investigatedThe objective was to develop an approach to travel surveys which would satisfactorily reproduce the r-esults of a conventional home interview survey, Using data from a X96fc comprehensive transportation survey in Indianapolis, Indiana, an analysis of variance was run to determine the effect of the ccaBsnonly defined factors, mode, purpose, a ad time, on trip volume and average trip length. Based onfcbaexteeajaly !sigb signify icance of all main effects awl interactions , a second variance analysis was sun to determine the effect of more specific purpose, time and mode factors on the traffic assigned to th3 freeway and arterial, links of the highway system* The significance of all main effects a^id a mode-purpose interaction were the baais for regression models account gag for mode, the peak hour, and the work purpose, A high decree of the variation in total trips on all major street system links was eaqplaiaed by multiple HfM?ar regression equations baaed on link volumes for the work purpose .Using the same regression approach, high degrees of explanation were achieved for total day, all purpose trips usicg all peak hour trips and for all peak hour trips using total day work trips. 7EHB JOSIRNEY TO fcORK; A SINGULAR BASIS FOR PATTERN SURVEYS

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INFORMATIVE ABSTRACTThe purpose of the research project was to develop a simplified procedvire for major thoroughfare planning in small urban areas. Previously developed corridor growth fuctor models for developing future estimates of intem€LL traffic in small urtan areas were tested, modified and refined using Lafayette, Indiana data.Regression models to provide data ususilly obtained by use of external cordon surveys were developed. External survey reports from thirty-six cities in fourteen states, remging in population from ten thousand to ninety thousand, provided the majority of the data utilized. Alternate procedures for providing the external svirvey information, based on use of historical data from the subject city, were also developed.The completed procedure provides forecasted traffic volumes within the accuracy necessary for major thoroughfare planning in small urban areas at Jones, Grecco 2 lower cost and with a level of sophistication that will permit application by personnel usually available in small coinm\inities The feasibility of the complete procedure for providing the required traffic volmne for major thoroughfare planning in small urbaji areas weis demonstrated in Columbus, Indiana.

The wealth of data collected on the urban area by a multiplicity of people for a multiplicity of purposes has led to an inefficient, disorganized utilization of resources for data handling. Until recently, most of the information collected has been gathered by a specific group for a specific purpose. This information was not useable by other than the primary data recipient because of its narrow definitions and specific characteristics Provided herein is a system whereby data that are collected only once are useable by all segments of the urban environment. Universally compatible definitions, aggregation unit, and procedures are developed. Computer programs were developed to handle the data for the system. The Environmental Data Storage and Retrieval System (EDSARS) will make a useful tool for all segments of the urban environment by putting all Maxman-Greccoĝ enerally useable data in one place with one set of definitions and aggregated on one useful module, utilising one set of data handling procedures. The basic unit of data collection was established on a parcel basis, thereby providing a high degree of flexibility in data aggregation. The conceptual development of information theory as it applies to urban data systems was first explored , The actual conceptual development of EDSARS is explained next., followed by the operational procedures needed to utilize the EDSABS system,