(Created page with "==== Off-ramps ==== When adding/editing off-ramps on a motorway we want to make sure the ramp splits off from the main motorway segment at the last possible place where the driver can ''legally'' change lanes, ie. the gore point (where the solid white line starts). This is to ensure navigation instructions don't disappear prematurely causing confusion while driving. In case of more complex off-ramps where the ramp itself branches off in different directions the locati...") |
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==== Off-ramps ==== | ==== Off-ramps ==== | ||
A motorway off-ramp must be mapped as a one-way "ramp" (segment type). | |||
They should be named as <code>'''J'''[exit number] [number of main road the ramp leads to] '''>''' [place(s) the ramp leads to]</code> following what's written on the exit signs on the side of the motorway. (For example ''J16 R118 > Cherrywood, Loughlinstown'') | |||
Appropriate speed limits must be set, change points must be at the location of existing traffic signs. In case traffic signs and other information (eg. road surface markings) don't match, we follow the traffic signs. | |||
When adding/editing off-ramps on a motorway we want to make sure the ramp splits off from the main motorway segment at the last possible place where the driver can ''legally'' change lanes, ie. the gore point (where the solid white line starts). This is to ensure navigation instructions don't disappear prematurely causing confusion while driving. | When adding/editing off-ramps on a motorway we want to make sure the ramp splits off from the main motorway segment at the last possible place where the driver can ''legally'' change lanes, ie. the gore point (where the solid white line starts). This is to ensure navigation instructions don't disappear prematurely causing confusion while driving. | ||
''Add screenshot here.'' | |||
In case of more complex off-ramps where the ramp itself branches off in different directions the location of the branching point should be mapped following the same practice. | In case of more complex off-ramps where the ramp itself branches off in different directions the location of the branching point should be mapped following the same practice. | ||
Revision as of 12:06, 14 March 2024
Off-ramps
A motorway off-ramp must be mapped as a one-way "ramp" (segment type).
They should be named as J[exit number] [number of main road the ramp leads to] > [place(s) the ramp leads to] following what's written on the exit signs on the side of the motorway. (For example J16 R118 > Cherrywood, Loughlinstown)
Appropriate speed limits must be set, change points must be at the location of existing traffic signs. In case traffic signs and other information (eg. road surface markings) don't match, we follow the traffic signs.
When adding/editing off-ramps on a motorway we want to make sure the ramp splits off from the main motorway segment at the last possible place where the driver can legally change lanes, ie. the gore point (where the solid white line starts). This is to ensure navigation instructions don't disappear prematurely causing confusion while driving. Add screenshot here.
In case of more complex off-ramps where the ramp itself branches off in different directions the location of the branching point should be mapped following the same practice.