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Building a BRT system

What is BRT in the game?link

Can be considered BRT in the game a dedicated bus-way with high-capacity buses (articulated or bi-articulated). The BRT systems are more quickly and cheaper from conventional buses, because carries more people with lower cost.

You can use it in the game beginnings, with lower budget, or in cities with up to 100k inhabitants (the minimum viable for an underground metro system). BRT is also very useful to connect less dense areas and feed your main metro lines.

What is essential to build a BRT?link


Lanes and stationslink

First, you need to build or dedicate a way to bus traffic. You can use a different pattern from the normal streets, such as concrete lanes. In addition, you must put at the intersections the signals for bus-way, avoiding traffic cars invade your corridor. At the lane, you can add the stations, like in the picture:

01   BRT Station

BRT station on Simutrans pak128 map


The station must have higher capacity from normal bus systems, we recommend the minimum of 128-256 passengers. Your platforms need to be at least 2 squares length.

Terminalslink

Terminals are the final point of the corridors, which the line starts and finish. They also are very useful to regulate the intervals, as we will talk further ahead. The most important rule is: for every line and every corridor, you have to build and different terminal, to avoid traffic jams through your corridor. The most simple template is a two-platforms terminal, one for disembark and another for boarding, like in this picture:

02   BRT Terminal

BRT Terminal in Simutrans pak128. Red arrows shows the directions followed by buses


At the picture, it is the most simple terminal model, with two platforms, each one in a direction. We recommend putting one-way signs indicating the correct direction through the terminal. You must program the bus to stop at the both, doing disembark and boarding. See the schedule below:

03   BRT Route

Scheduling of the BRT route in the terminal station


Buseslink

The ideal buses for your BRT system have from 100 passengers capacity. Although it is not the ideal, this vehicle can be a good beginning for your system. As the demand increases, you can put more and larger vehicles, with 150, 200 or even 250 passengers capacity. Certify that your buses are enough to cover the city demand. You can find good add-on buses in the Addons pages.

How to increase your capacity?link


Elevated laneslink

Those are very useful to avoid signalized intersections, which reduces your operational speed. Elevated ways have some advantages from underground lanes, like the cheaper cost and less complexity to schedule. However, it is more difficult to put overtaking points, comparing to the underground lanes.

04   BRT Elevated

Elevated BRT lane through simutrans pak128 map


Underground laneslink

As the elevated lanes, underground lanes are essential to avoid intersections, but are more expensive and complex to build. Otherwise, underground lanes do not interfere in city landscape and can have overtaking points with more flexibility.

05   BRT Underground

Underground BRT station in simutrans pak128 map


Overtaking pointslink

Overtaking points are essential to increase your capacity and operational speed with express services. As BRT vehicles are smaller than trains, is more easy to saturate and crowd lines. Some direct and express services between terminals can be the relieve for crowded lines. Building a overtaking point is not difficult, you only must build your station out of the principal lane, as the image shows:

06   BRT Overtaking

Station with overtaking points in simutrans pak128. Through this station is possible to schedule express services due the overtaking point


Different serviceslink

Different from metro, which can have only one service in the lane, you can offer multiple services through your BRT corridor. If your first 5 stations are more crowded than the others, you can schedule a partial service only between this stations. If your terminals and transfer stations have bigger demand, you can roll-out a express service which only stop at transfer stations. If you have a bottle neck from the terminal to a specific station, you can make a temporary and direct service from the terminal to these stations. The BRT has several possibilities.

Big terminals with multiple platformslink

A simple terminal is enough for only one BRT corridor with just only service. But, as you add lines and services, you can build more stations and platforms. We recommend one double platform for each service which ends in the terminal, and a single platform with two directions for all services that will stop at that. You can see below some terminals in this template:

07   BRT Big Terminal

This terminal serves 4 BRT services from the same corridor, which each one has one separated platform. In red, the disembark platform. In green, the platform for the services.


08   BRT Big Terminal

Another template. This station is stop for one corridor and terminal for another, which has 3 different services terminating here (green). The disembark bay is in red. Here you can see also the regular stop for the corridor (blue).


09   BRT Big Terminal

Another template. This station is terminal for 3 corridors (red) and regular stop for another (blue).


Regular intervalslink

You can also regularize the intervals of your BRT system to avoid vehicle convoys. To make this, you must schedule 100% minimum load at your terminal station, and put maximum month wait time. As smaller your month wait time, you'll have smaller intervals between your vehicles. Please be aware if the line has enough vehicles to cover the interval. The ideal is to have 1-2 vehicles in terminal waiting depart.

10   BRT Regular Intervals

For most BRT corridors, the ideal is 1/32 or 1/64 interval


11   BRT Regular Intervals

Vehicles waiting depart due the interval scheduled


Acknowledgementlink

This guide was written by paideplantas on the Simutrans Redditlink-external, and reproduced here with his permission. You can reproduce this guide anywhere as long as you mention the author.
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