Road ManagerManagement Subsystem for Road and Linear Civil Works Projectsc/Playa de Lagoa,1 Boadilla del Monte 28660 Madrid916322168 / 605876613 www.acm-sl.com

Basic ideas To enable the Operational Management Systems to link with an actual model of the road, based on its cartographic representation.To ease the use by non highly qualified personnel.Relying on a data model specialized for Lineal Civil Works.To cope with the problem of Versioning of maps and milestones.

Road model (1)The model used in RoadManager for the road is oriented to ease the identification of any point based on the linear reference additionally to the x,y positioning.The cartographic model is designed to allow the management of versioning of both the cartographic model itself, and, independently, of the milestone referencing system. So it is possible to make the map at a given date.

Road model (2)Impact of this model on different contexts:Legal (i.e. finding the situation of accidents in a given road at a given date presented on the actual map of that date)Works Management (i,e. situate the extend of a given project or work done on the road presented on the actual map of that date)Technical (i.e. maintaining a data base with the evolution of the technical parameter of the road (curvature, camber, etc) at each point of the road.

Technical characteristics (1)RoadManager is based on a standard Geographical Information System (GIS) on which the following extensions are provided:Linear referencing of each element of the road (according to actual milestones).Versioning Management of the road plot and cartographic base.Independent Versioning Management of the pave and the linear references (milestones).

Technical characteristics (2)The underlying GIS allows for the presentation of the graphic data according layers, specific symbology, navigation through the map (zooming, panning, etc), plotting, integration with Office platforms, etc.All data, even cartographic data and project are kept on standard data bases, minimizing the cost of ownership typically associated to these kind of applications.

Some details about the specific model used in the former ProjectEach side of the road has an associated reference line (ideally that line should be the center of the road axis).Each point of each element is kept with x, y and z coordinates, and it is associated to one of the sides. Any point in the map (inside the pavement or outside) can be referenced using the exact situation of milestones, projecting it on to the reference line. Resolution of the computation are sub-millimetric. We developed a number of filtering programs to detect and correct (when possible) errors on the incoming data (both for the road itself and for the cartographic data).

The next slides present the result of the analysis done on a part of that highway with the following characteristics: Total length :117 kms Average distance between consecutive points on the reference line : 22 m.Example: Project done with data from Highway A92 Cordoba- Sevilla

In the next slide red plots are referred to left hand side of the Highway. Blue plots are referred to the right side.The table at the bottom shows additional data from the analysis (x, y, z coordinates, actual curvature radius, distance to origin, etc).

Distance of the point at hand from the start of the HighwayInverse of curvature radius at each pointData (coordinates, actual radius, road side, etc)

These plots allow for a visual track of the quality of the design and/or construction of the Project. Flat regions correspond to straight sectionsThe higher the curvature the lesser the actual turning radius less security and comfort The density of hills (or needles) in this plot indicate the actual density of curves in the road.The higher the hills the bigger the danger to travel through the road.The ideal road (straight line) with be also represented by an straight lineNext slide is just a zoom over the former slide

Zoom

Making a bigger zoom RoadManager makes visible difficult to find details of the as-built Project. In the next slide it is easy to see two such cases:A normal curve, with radius around 500m. Represented by a plateau in the plot, surrounded by transitional curves (ideally clotoides).A pure transitional clotoide zone used to transition between two straight zones.Other (important) application of RoadManager is a tool for detecting very difficult to track cartographic errors, such as the needles. Those needles can not be real and come from very tiny error in the computation of the x, y coordinates of those specific points.

Curve in the road of radius ~500 m Transition Zone in the road implemented with a clotoide

Integration with other ApplicationsThe aim of RoadManager is to solve the difficult problem of making and maintaining a useful and practical model for the as-built Projects of Linear Civil Works. As such it provides all necessary hooks to be integrated on with other software Applications, such as those for Project Planning, Road Maintenance Management, etc. RoadManager is based on standards: for data base managers, for the underlying GIS system, for integration with MS Office.A key concept in the design of RoadManager is that it does not have the intention to become the center of the system, but rather to offer other systems some difficult to implement models and functionalities.

Es necesario mantener la representacin grfica de la va de acuerdo con las modificaciones e incidencias que se producen en las operaciones diarias sobre las misma.Con objeto de minimizar los costes inherentes a las modificaciones de la representacin grfica es necesario disponer de un modelo de datos y unas herramientas que permitan que estas modificaciones puedan ser realizadas por el personal habitual en la obra, minimizando el tiempo requerido.Las carreteras son objetos que pueden ser considerados desde varios puntos de vista: del diseo, de operaciones, legal, etc. Road Manager utiliza un modelo de datos que permite localizar las entidades que describen la carretera de forma utilizable por un tcnico (pe. localizacin por Pk,Hecto)Las carreteras evolucionan y cambian en varios sentidos: tanto en el trazado (menos frecuente) como en los elementos de sealizacin y en los elementos de referenciacin (mojones, hitos kilomtricos, etc). Road Manager incorpora un sofisticado sistema de versiones que permite recuperar el trazado de la carretera en una determinada fecha e independientemente asociarle una versin de referencia de carreteras.La presentacin grfica se realiza utilizando GeoMedia de Intergraph.Los datos grficos se mantienen en bbdds Access, SQL Server, OracleEl sistema es muy agil. Aqu se presenta un conjunto de datos correspondiente a un trozo de 117 kms de autoviaEl usuario tiene una gran libertad para decidir que elementos presenta y como los representa. Road Manager maneja un gestor de versiones especfico que permite cambiar El grfico muestra la variacin de los radios de curvatura (expresados como su inverso) a lo largo del tramo de carreteraSe dispone de funciones zoom que permiten hacerse rpidamente una idea de cmo es la evolucin de la via en un determinado tramo.En este grfico es fcil detectar visualmente como es la trayectoria de la carretera, donde hay tramos rectos, donde curvos ( y que radio tiene en esa zona) y como se producen las transiciones dentre tramos curvos y/o rectas (idealmente deberan ser clotoides)