Road networks in Haul Infinity have default speeds, signposted speeds, global maximum speeds, cornering speeds and ramp speeds. Wherever two speed settings conflict, the lowest speed will be chosen.
Default Speeds
Whenever a new segment is drawn, it is automatically signposted at the default speeds.
Trucks can travel up to (but not more than) the Max Speed.
Trucks exit the segment up to (but not more than) the Final Speed.
Trucks always choose the lowest of all applicable speed limits.
Max Speed
To change the network default max speed:
Go to Tools > Project Settings > General > Network Defaults.
Change the Max Speed to 60 km/h.
Cornering Speeds
Cornering speeds are used to slow down trucks at intersections and switchbacks. Corners are measured by the angle of deflection and the lookahead distance.
The angle of deflection is calculated from the total distance travelled during cornering (the "corner lookahead distance").
To set cornering speed limits:
Navigate to the sample data \NodesVersion folder.
Open SampleModelWithNodes.hinf.
Navigate to Setup > Limits > Cornering Speed Limits.
Set the speed limit to 10 km/h for deflections greater than 80 degrees.
3. Go to the Network tab.
4. Select the LGStockpile > Right click > "Show path to" > "Loaded" > “Crusher” > “Crusher”.
5. Go to the Charts tab.
6. Confirm that the truck is slowing on corners.
Corner Lookahead Distance is set in Setup > Settings > Corners
Loaded and Unloaded Speed Limits
A truck is never allowed to exceed its loaded or unloaded speed limits. The speed limits gradients are customisable between -100% downhill and +100% uphill.
To set loaded downhill speed limits:
Go to Setup > Limits > select Truck > Loaded Speed Limits.
Change the loaded speed limit to 20 km/h for gradients of -5% and lower.
To set loaded uphill speed limits:
Select the Loaded Speed Limit category.
Change the loaded speed limit to 10 km/h for gradients of 9% and greater.
This can be useful for locking trucks in second gear downhill loaded, or first gear uphill loaded, according to your site safety rules and operating practices.
Road Signage
Speed signage is displayed where there is a change in speed between to segments, or at the end point of a road.
Speed signs set the maximum forward and backward speeds across a segment.
Slow points cause trucks to decelerate to that speed before they exit the segment.
There are different ways you can use to set speed limits on your project network.
Placing signs onto the network
Select the desired sign type from the Road Sign dropdown in the toolbar.
Click on road segments to place a sign. Multiple signs can be placed consecutively without having to reselect.
Assigning speed in the viewport via right click menu
Go to Network tab and in Nodes panel choose "LGStockpile", right click and press "Zoom To".
Double click the entry road to the stockpile.
Right click > Set Speed Limit on Selected Segments > 20 km/h.
Assigning speed in the Segments panel via right click menu
Go to Network tab and in Segments panel select roads by name.
Right click in the Network > Set Speed Limit on Selected Segments > 40 km/h.
Transfer Speeds
Transfer speeds are the speeds at which a truck enters onto and exits from the road network.
To change the network transfer speed:
Go to Setup > Settings > Transfer Speeds.
Change the Entrance and Exit speeds to 25 km/h.
The trucks will now use the signposted speed limits to traverse from autojoins to the network, rather than coming to a full stop.
Terminal Speeds
Terminal speeds are the speeds at which a truck arrives at and exits from a node. In almost all projects this should be set to zero, since trucks slow to a stop at the digger and at the dump.
If you are modelling a partial haul, for instance terminating at the on-ramp to a highway, then the "Exit Speed Loaded" and the "Entry Speed Unloaded" could be set to the speed limit of the highway. Note that this will apply to all nodes in the project.
If you are modelling a conventional truck and shovel operation, leave these values at zero.