it affects the trade of every city you can define it by three production modifiers per two of these are 0 by default
usually it is foreigntradepartner gets x when you send a trader and
foreigntradingpartner gets x when he sends a trader
i haven't seen the trader range yet, but in my first game the trading range consequently increased, probably due to trading posts (or i don't understand why I could trade across the world from colonial cities to my capitol)
obviously all changes also affect the ai
i just changed it so that sender and recepient will always receive effect
sending trader has an advantage
<District_TradeRouteYields>
<Row DistrictType="DISTRICT_CITY_CENTER" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_CITY_CENTER" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_CITY_CENTER" YieldType="YIELD_GOLD" YieldChangeAsOrigin="3" YieldChangeAsDomesticDestination="3" YieldChangeAsInternationalDestination="4"/>
<Row DistrictType="DISTRICT_HOLY_SITE" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_HOLY_SITE" YieldType="YIELD_FAITH" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="1" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_CAMPUS" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_CAMPUS" YieldType="YIELD_SCIENCE" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="1" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_ENCAMPMENT" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_HARBOR" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_HARBOR" YieldType="YIELD_GOLD" YieldChangeAsOrigin="3" YieldChangeAsDomesticDestination="3" YieldChangeAsInternationalDestination="4"/>
<Row DistrictType="DISTRICT_COMMERCIAL_HUB" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_COMMERCIAL_HUB" YieldType="YIELD_GOLD" YieldChangeAsOrigin="3" YieldChangeAsDomesticDestination="3" YieldChangeAsInternationalDestination="4"/>
<Row DistrictType="DISTRICT_ENTERTAINMENT_COMPLEX" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_THEATER" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_THEATER" YieldType="YIELD_CULTURE" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="1" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_INDUSTRIAL_ZONE" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_ACROPOLIS" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_ACROPOLIS" YieldType="YIELD_CULTURE" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="1" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_HANSA" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_LAVRA" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_LAVRA" YieldType="YIELD_FAITH" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="1" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_STREET_CARNIVAL" YieldType="YIELD_FOOD" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="2"/>
<Row DistrictType="DISTRICT_ROYAL_NAVY_DOCKYARD" YieldType="YIELD_PRODUCTION" YieldChangeAsOrigin="1" YieldChangeAsDomesticDestination="2" YieldChangeAsInternationalDestination="1"/>
<Row DistrictType="DISTRICT_ROYAL_NAVY_DOCKYARD" YieldType="YIELD_GOLD" YieldChangeAsOrigin="3" YieldChangeAsDomesticDestination="3" YieldChangeAsInternationalDestination="4"/>
</District_TradeRouteYields>
is in districts and imho selfexplanatory
I was annoyed by incountry trading routes being superior to all other options
by fast do you mean how fast the route is finished/road built and post established or when you are able to chose a new route?