Author: M. R. Parker (Jr)Publisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
Synthesis of Speed Zoning Practices. Technical Report
Author: M. R. Parker (Jr)Synthesis of Speed Zoning Practices
Author: Martin R. ParkerPublisher:
ISBN:
Category : Speed limits
Languages : en
Pages : 55
Book Description
This research was conducted to examine State and local speed laws, regulations, and current practices for setting speed limits. The information for the study was obtained from a review of the literature and a mail survey of State and local highway officials conducted by a Task Force of the AASHTO Subcommittee on Traffic Engineering. Throughout years of experimentation and observation, little consensus has been reached concerning criteria that should be used to establish speed limits. While the 85th percentile speed is considered as a major factor in all States and most localities, the deviations from the 85th percentile that are used to establish the speed limit can result in an arbitrary limit.
Impact and Implementation of the 55-mile-per-hour Speed Limit
Author: United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Surface TransportationPublisher:
ISBN:
Category : Speed limits
Languages : en
Pages : 832
Book Description
Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985
Author: Federally Coordinated Program of Highway Research, Development and Technology
Author: Survey of Speed Zoning Practices
Author: ITE Traffic Engineering Council. Technical Council Committee TENC-97-12Publisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Synthesis of Highway Practice
Author: National Cooperative Highway Research ProgramPublisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 530
Book Description
Biennial Report of FHWA Research, Development, and Technology Transfer
Author: Speed Zone Guidelines Using Roadway Characteristics and Area Development
Author: Robert W. StokesPublisher:
ISBN:
Category : Neural networks (Computer science).
Languages : en
Pages : 88
Book Description
The objective of this study was to quantify effects that selected characteristics and adjacent development patterns have on roadway speeds. Based on the results of a literature search and the availability of data for Kansas highways, twenty-seven variables were identified as possibly affecting speeds on rural state highways and thirty-two variables were identified as possibly affecting speeds on urban state highways. Speed data and data for the potential explanatory variables were collected for a total of 539 sections of state highway (186 rural and 353 urban sections). Two approaches were used to develop and test models to predict speeds on rural and urban state highways based on roadway characteristics and adjacent development patterns. The first approach was based on models in the form of multiple linear regression equations. The second approach employed artificial neural networks (ANNs) to predict highway speeds. None of the regression models were entirely satisfactory in terms of their ability to predict the 85th percentile speeds on rural and urban highways within +/-5 mph (+/-8 km/h). A number of regression models are presented, however, they should be used with caution. Two independent databases were used to train two sets of ANN models of rural and urban speeds. The first set of ANN models (Stage 1) was developed using the same data used in the regression analysis. The second set of ANN models (Stage 2) was developed using a database provided by the Kansas Department of Transportation (KDOT) Bureau of Traffic Engineering. The second database contained only those variables that KDOT believed drivers consider in selecting a driving speed. Overall, the Stage 2 ANN models developed in this study were found to perform much better than either the Stage 1 ANN models or the regression models in predicting rural and urban highway speeds.
Author: William C. Taylor