Overview: City and District Policies
The vanilla game and DLC policies can affect traffic in your city in many ways...
Vehicle Restrictions
Bike ban on sidewalks (After Dark DLC)
Cyclists cannot use sidewalks (pavements) and must instead use bike paths or dedicated cycle lanes
Can cause more road traffic as cims resort to using their cars or taxis
See also: Encourage biking
Combustion engine ban (Green Cities DLC)
Prevents combustion engine cars from using the roads
Can push more cims, particularly tourists, to use public transport
See also: Electric Cars policy
Heavy traffic ban
Blocks cargo vehicles from using the roads
Similar to TM:PE cargo vehicle restriction, but applied to a district instead of individual roads
Old town (After Dark DLC)
Only residents can use the area for motor vehicles
Blocks non-local traffic
Also blocks some public transport vehicles (likely a bug, see #371)
Transport preferences
Come one, come all (Stadiums in Match Day DLC)
This is actually a Stadium policy
When enabled, cims will prefer public transport when attending matches at the stadium
Encourage biking (After Dark DLC)
Cims try to cycle more often, reducing road vehicle usage
See also: Bike ban on sidewalks
Electric cars (Green Cities DLC)
Cims living in the area are forced to buy electric vehicles
See also: Combustion engine ban
Free public transport
Cims much more likely to use your public transport services
Only applies to bus, tram, metro, monorail, and local train fares.
For district policies, only passengers leaving from that district will get a free ride.
Intercity trains, cargo trains, ships, planes and taxis will still continue to provide revenue, regardless.
High ticket prices (Mass Transit DLC)
Fewer cims use public transport (so more road traffic and congestion)
Prefer ferries (Mass Transit DLC)
Cims will try and use ferry service if it is available
Services
Automated Sorting (Industries DLC)
Increase mail capacity by 20%
May increase number of mail vans, may reduce number of mail lorries.
Fast Recovery (Natural Disasters DLC)
No searching for survivors after disasters
Fewer disaster recovery vehicles on the roads
Road blockages due to collapsed buildings can be cleared faster
Free WiFi (Industries DLC)
Reduce mail accumulation by 15%
Fewer postal service vehicles in those areas
Harsh prison sentences (After Dark DLC)
Reduces crime rate
Fewer police vehicles in those areas
Helicopter priority (Natural Disasters DLC)
Police, fire and ambulance services will dispatch helicopters to the area, instead of road vehicles
Most effective in remote areas that would take long time to reach by road vehicles
Park maintenance boost (Park Life DLC)
Increases Park Maintenance vehicles' shift length by 50%
Possibly more park maintenance vehicles on the roads
Recycle garbage (Park areas in Park Life DLC)
Decrease garbage accumulation by 20% for the Nature Reserve buildings.
Fewer garbage trucks in those areas
Recycle Plastics (Green Cities)
More goods produced at recycling plants = more trucks spawned
Recycling
Slightly reduced garbage accumulation
Fewer garbage trucks on your roads
Transport patterns, volume and congestion
Ad campaign (Arenas in Concerts DLC)
More visitors to festivals
Make sure you have good public transport, and/or plenty of car parking!
Advanced Automation (Industry areas in Industries DLC)
Increase industry production output by 10% = more cargo vehicles
Advertisement campaign (Parks) (Park areas in Park life DLC)
20% more visitors to park area
Advertisement campaign (Varsity) (Campuses in Campus DLC)
Draws 20% more visitors to arenas on campus
Airplane Tours (Sunset Harbor DLC)
Increases entertainment and city attractiveness
Likely to pull in more tourists, also more leisure travel.
Anti-Slip Studs (Winter maps in Snowfall DLC)
Less elderly injuries = fewer ambulances/hearses
Automated toll
Faster passage through toll booths (less congestion)
Big business benefactor
High density commercial buildings double their sales
(Not tested yet) More cargo deliveries are required
Boost connections (Park Life DLC)
20% more outside traffic (more traffic and congestion)
Education Boost
Cims prefer education to work
May increase traffic near education buildings, may reduce traffic near industry areas
Improved logistics (Industry areas in Industries DLC)
Extractors and processors store 20% more stuff
Can increase or reduce cargo traffic flows depending on how your industry is set up
Improved Work Safety Supervision (Industry areas in Industries DLC)
Better healthcare = fewer ambulances/hearses
Industrial space planning
Doubles goods from industrial buildings = more cargo vehicles
Industry 4.0
Increased production output by 50% = more cargo vehicles
Reduces workplaces by 30% / zoned industry = fewer cims travel to industry
Lightning rods (Natural Disasters DLC)
Less building fires during thunderstorms = fewer fire engines
Fewer blocked roads due to building fires
See also: Smoke detector distribution
Main Park (Park areas in Park Life DLC)
Increases number of visitors to park
Match Security (Stadiums in Match Day DLC)
Less crime = fewer police and prison vehicles
Night tours (Park areas in Park Life DLC)
Park gets 30% more custom at night (more traffic)
Note: Not sure if it actually affects traffic that much
NIMBY (After Dark DLC)
Leisure shuts down at night (less traffic)
Pet Ban
Slightly less garbage = fewer garbage trucks
Prefer parks (Park Life DLC)
Parks, Plazas and Park Areas draw 10% more visitors
Recreational Use
Slightly more tourists
Slightly fewer criminals = fewer police vehicles
School's out (After Dark DLC)
Cims prefer work to school
May increase traffic near workplaces, may reduce traffic near education buildings
Small Business Enthusiast
Small businesses increase sales = more cargo vehicles
Smoke detector distribution
Significantly reduced fire risk = fewer fire engines
Fewer blocked roads due to building fires
See also: Lightning rods
Smoking Ban
Slightly better health = fewer ambulances/hearses
Studded tires (Winter maps in Snowfall DLC)
Snow doesn't slow down traffic speeds as much
See also: Road Conditions and Maintenance
Student Healthcare (Campus areas in Campus DLC)
Slightly better health = fewer ambulances/hearses
Tourist Travel Card (Sunset Harbor DLC)
The city will receive 8% more tourists.
VIP (Natural Disasters DLC)
Limits emergency shelter use to local cims
See also:
Info views:
Mods:
Real Time - Cims get daily schedules, creates rush hours
Optimized Outside Connections - helps tame traffic spawned at outside connections
Rebalanced Industries - tames industry area traffic
Realistic walking speed - makes cims walk at human speed