Back to Search
Start Over
On the Flow Capacity of Automated Highways.
- Source :
-
Transportation Science . Feb70, Vol. 4 Issue 1, p52. 12p. 5 Graphs. - Publication Year :
- 1970
-
Abstract
- Virtually all proposed systems for highway automation have at least one mode in common-steady-state car following. The nature of this mode is extremely important, as it can determine the upper limit of flow capacity of an automated highway. This limit is explored for a linear headway controller, and a fundamental relation between the effective vehicle response time and the permissible traffic stream density is obtained. The required intervehicular spacing with a linear headway controller is shown to be proportional to the effective vehicle time constant for small-signal inputs; thus, one can achieve small spacings and high flow rates by reducing this parameter to I see or less. However, the vehicle is then highly responsive to small changes in lead-vehicle speed- possibly resulting in both passenger discomfort and poor fuel economy. These shortcomings can be avoided by using a linear velocity controller for automatic car following. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00411655
- Volume :
- 4
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Transportation Science
- Publication Type :
- Academic Journal
- Accession number :
- 4469204
- Full Text :
- https://doi.org/10.1287/trsc.4.1.52