Abstract



We propose a general model for carfollowing traffic on a single lane. As an important model for a number of reasons, the acceleration is assumed to be a sigmoidal function of the distance between the cars and of the speed difference. We assume that the car following the leader is in an equilibrium state when there is no speed differential with the leading car, and when it follows it at the safe minimum distance. Taking into account the driver's reaction time, the resulting model is a functional differential equation. We study the stability of the equilibrium state by investigating the location of the roots of the quasicharacteristic equation. We carry out both numerical and graphical simulations, and use a continuation method to get the variation of these roots as the parameters change whithin some ranges of values. This gives us regions of values of the parameters for which the equilibrium solution changes its stability giving rise, eventually, to some kind of periodic solutions. \begin{thebibliography}{99} % \bibitem{}Haberman, R, \emph{Mathematical Models}, Prentice Hall. New Jersey 1977. % \bibitem {}Hale, J., \emph{Theory of functional Differential Equations}, Springer. New York 1977. % \bibitem {}Keller, H.B., \emph{Numerical solution of Bifurcation and Nonlinear Eigenvalue Problems}, Application of Bifurcation Theory. P.H. Rabinowitz, ed. Academic Press, 1977. \end{thebibliography}  
International

Si 
Congress

Building Mathematics and Mutual Understanding. An international conference on occasion of Alfonso Casal?s 70th birthday 

960 
Place

Madrid (Spain) 
Reviewers

Si 
ISBN/ISSN

10726691 


Start Date

14/07/2014 
End Date

15/07/2014 
From page

1 
To page

20 

2014 Madrid Conference on Applied Mathematics in honor of Alfonso Casal, Electron. J. Diff. Eqns., Conference 22 (2015) 