Guidance Screen Functionality

The information shown on the guidance screens functions as follows:

WAYPOINT REFERENCE NUMBER  - The waypoint reference number is shown on the selected guidance screen only when guidance to a waypoint is being followed. If a route is not being followed but guidance is being given to a single waypoint selected from a route, then the waypoint reference number is shown. If a route is not being followed but guidance is being given to a 'one off' destination that is not part of a route, then the waypoint reference number will not be shown. A single space is placed between the decimal point separator after the route reference number and before the waypoint reference number.

WAYPOINT (DESTINATION) TITLE  - The waypoint title is shown on the selected guidance screen only when guidance to a waypoint is being followed and indicates the current waypoint for which the guidance is being given. If a route is not being followed but guidance is being given to a single waypoint selected from a route, then the waypoint title is shown. If a route is not being followed but guidance is being given to a 'one off' destination that is not part of a route, then the destination title is shown.

DESTINATION (WAYPOINT) COORDINATES  - The destination coordinates are shown on the full guidance screen when guidance is being given and indicates the current destination (waypoint) for which the guidance is being given. The destination coordinates are shown in the format selected within the settings menu option.

BEARING  - The bearing is the direction from the current vehicle position and the heading to the destination (waypoint). The bearing is displayed on the selected guidance screen to the nearest whole degree starting at 0 degrees and is updated every 2 seconds +/- 0.1 seconds. The bearing is updated at the same time as the heading.

DESTINATION ARROW  - The destination arrow forms part of the guidance icon shown on the selected guidance screen and indicates to the user the direction from the current vehicle position and heading to the destination (waypoint). The arrow changes color to indicate the mode of the guidance. The destination arrow has an accuracy of 15 degrees starting at 0 degrees. The destination arrow is updated as required when dictated by an 'event' and at the same time as the bearing and heading. The destination arrow is placed underneath the compass arrow.

COMPASS  - The compass arrow forms part of the guidance icon shown on the selected guidance screen and indicates to the user the direction of North as selected from the settings menu option. The compass arrow has an accuracy of 15 degrees starting with 0 degrees. The compass arrow is updated as required when dictated by an 'event' and at the same time as the destination arrow. The compass arrow is placed on top of the destination arrow.

HEADING UP ICON  - The heading up icon forms part of the guidance icon shown on the selected guidance screen and indicates to the user the direction the destination arrow should point to achieve the minimum distance from the vehicle position to the destination (waypoint). The heading up icon has an accuracy of 15 degrees starting at 0 degrees. The heading up icon is updated as required when dictated by an 'event' and at the same time as the destination arrow.

HEADING  - The heading gives the user the direction in which the vehicle is pointing. The heading is displayed on the full guidance screen to the nearest whole degree starting at 0 degrees and is updated as required when dictated by an 'event'. The heading is updated at the same time as the bearing.

GMT 24 HOUR  - The GMT 24-hour clock time is shown on the full guidance screen and is taken directly from the GPS data and cannot be adjusted by the user.

ALTITUDE  - The accuracy of the altitude is 50 meters or 150 feet depending on the system settings. The altitude is displayed on the full guidance screen even if the latest altitude data is not available. If valid altitude data is not available, the last known altitude is displayed. The altitude is updated as required when dictated by an 'event'. The altitude is updated at the same time as the bearing and heading.

CURRENT CAR POSITION ICON  - The current car position is the same as is used for road navigation. The Current Car Position icon has an accuracy of 15 degrees starting with 0 degrees. The Current Car Position icon is updated as required when dictated by an 'event'.

CURRENT COORDINATES  - The current coordinates are shown on the selected guidance screen. The current coordinates are the coordinates of the current vehicle position in the format selected in the settings menu option. The resolution of the coordinates is to be such that the least significant displayed digit remains as close as possible to the calculated vehicle position. The current coordinates are updated at the same time as the heading and bearing.

DISTANCE TO THE DESTINATION  - The distance to the destination is shown on the selected guidance screen. The distance to the destination is the direct point to point distance from the current vehicle position to the destination (waypoint) in the selected system settings. The distance to destination is updated as required when dictated by an 'event'. The distance to destination is updated at the same time as the heading and bearing.

ARRIVAL AT DESTINATION (WAYPOINT)  - When a waypoint is achieved and the guidance screen is updated to direct the user to the next waypoint of the route, the following items are updated for the new waypoint:

• Waypoint reference number.
• Waypoint title.
• Destination arrow.
• Destination coordinates.
• Distance to destination.
• Bearing to destination.

If the waypoint is the final waypoint of the route or the destination is not part of a route, the existing guidance data remains active.

MAP  - When the map guidance screen is selected a background map is shown. The map is stored on the CD-ROM. The map scale cannot be changed as it is fixed by the map image stored on the CD-ROM. The following information is displayed on the map:

• Map scale.
• The current vehicle position (icon as road navigation).
• Guidance start position.
• Route waypoints.
• Lines joining route waypoints and start position.
• Terrain information.
• Points of interest.

If a route is not being followed, the lines that join the waypoints, the current position, the guidance start position and the destination position, are double pixel in width with black for the completed part of the guidance and red for the not achieved part of the guidance.

MAP DISPLAY LAYERING  - The information that constitutes the map display has the displayed information layered as specified below, starting at the bottom layer and working its way to the top layer:

• Vector map (if available).
• Lines joining waypoints and current car position icon.
• Waypoint icons.
• Current car position icon.
• Cursor (cross Hairs).
• Scale indicator.

HEADING UP  - The heading up icon remains at the top (0 degrees) position of the guidance icon. The guidance arrow indicates the destination bearing and the compass arrow indicates the position of North. The heading up icon indicates to the user the direction the destination arrow should point to achieve the minimum distance from the current vehicle position to the destination (waypoint).