The speed at which the AI drive

Hi,

I am currently getting to grips with the route editor by building some countryside roads (using Simplestreets 10.5 and 15.5), which in the UK generally have a speed limit of 60mph for cars. However, when building similar roads on OMSI, I've found that despite setting the speed limit for cars to just over 100 kph, the cars don't seem to go above about 50mph (80kph). This is a bit of a nuisance, especially on the 15.5 roads (an overtaking lane on one side), because driving a bus you are generally able to keep pace with the traffic - whereas IRL in a similar scenario the traffic would normally be shooting off.

Is there any way of increasing the speed at which the AI drive, or is this maximum hardcoded into the game? If I was to put down 'Autobahn'-style motorway splines, would the traffic drive faster (as, IRL, a lot of German Autobahns see traffic at well over 160kph , not sat there doing 75-85 .

Thanks in advance,

Matt

This is a thing I've noticed sometime ago, when I set in my map some kilometers of a motorway and later a 100kph-speed conventional road. In the motorway, where limit is set at 120 kph, cars go at 50-70 kph, but in the road, they travel at most 55 kph. This is a bit annoying when you have more than 50 km of roads and motorways, lowering a lot the average speed. I wanna try if that is a general issue or otherwise is only a problem that occurs in SimpleStreets by placing a MR road, setting a maximum speed and observing.

Edit: I've just tried this and...it's a general problem. 1,5 km of straight 12m-SeeburgerWeg street, not many cars, a limit of 170kph and they don't overpass 80kph...maybe a programming bug?

What about the car's Vmax?

peterZZD schrieb:

What about the car's Vmax?

Maybe that's it...whereabouts would I find that?

I would have thought however that the Vmax for the cars would reflect their IRL top speeds

EDIT: I've just checked the ai_v_max values for the Golf and the Merc W123 (in the ai_constfile) and they are both well over the 75-85 kmh that the AI drive at:

W123

Code:

[const]
AI_v_max
160

[const]
AI_v_max_erreich
190

[const]
AI_M_gas_max
500

[const]
AI_F_brems_max
10000

Golf:

Code:

[const]
AI_v_max
160

[const]
AI_v_max_erreich
190

[const]
AI_M_gas_max
1000

[const]
AI_F_brems_max
10000

Does OMSI take the incoming turns/hills into that so the AI don't drive unrealistically fast over sharper bends? Cars do slow down for junctions, maybe they also do that for lighter turns?

peterZZD schrieb:

Does OMSI take the incoming turns/hills into that so the AI don't drive unrealistically fast over sharper bends? Cars do slow down for junctions, maybe they also do that for lighter turns?

I don't think this is about that, because I've done a test with 1.5 km of straight road, so there weren't any light turns at all. Maybe it's a bug, maybe other physic things...perhaps Marcel or Rüdiger have some answers!

And sometimes related to this are the density properties, only one of them (extremely low density) works, the others doesn't, so in a motorway, as there are a huge lot of cars, they are going only at 50-60 kmh because the not enough distance to their forward ones.

Yeah I didn't think that they were slowing for corners cause I had some quite straight road as well and they were still slow (although ofc they drove even slower when cornering). I really can't think what is causing it, unless there is a global vmax for AI or something?

peterZZD schrieb:

What about the car's Vmax?

Maximum Speed has been reported to be 80 km/h in german section also.

noticed that same thing as well, hopefully one of the developers would give us an official answer though. Hopefully they can fix that limitation. Would love to be driving buses on the autobahn or on one of America's interstates going 70mph

Emil schrieb:

peterZZD schrieb:

What about the car's Vmax?

Maximum Speed has been reported to be 80 km/h in german section also.

From what I've seen, this maximum speed is not always the same. In a few times I've seen cars driving at 85-90 km/h, but they quickly slow their speed.

Still trying to get this sorted...anyone got any ideas?

mattj schrieb:

Still trying to get this sorted...anyone got any ideas?

I dont think you can manage it. IMHO it's implemented in OMSI.exe, so only developers may change it.

Would be a shame if that is the case Perhaps one of the developers can post here and confirm?

aarongilp schrieb:

This is a thing I've noticed sometime ago, when I set in my map some kilometers of a motorway and later a 100kph-speed conventional road. In the motorway, where limit is set at 120 kph, cars go at 50-70 kph, but in the road, they travel at most 55 kph. This is a bit annoying when you have more than 50 km of roads and motorways, lowering a lot the average speed. I wanna try if that is a general issue or otherwise is only a problem that occurs in SimpleStreets by placing a MR road, setting a maximum speed and observing.

Edit: I've just tried this and...it's a general problem. 1,5 km of straight 12m-SeeburgerWeg street, not many cars, a limit of 170kph and they don't overpass 80kph...maybe a programming bug?

There are several work arounds so that the bus can go over 88kph and not be stuck in traffic. Could work around it by making the left lane open up - less priority/less traffic. In fact, I am about to try that.

krtz07 schrieb:

aarongilp schrieb:

This is a thing I've noticed sometime ago, when I set in my map some kilometers of a motorway and later a 100kph-speed conventional road. In the motorway, where limit is set at 120 kph, cars go at 50-70 kph, but in the road, they travel at most 55 kph. This is a bit annoying when you have more than 50 km of roads and motorways, lowering a lot the average speed. I wanna try if that is a general issue or otherwise is only a problem that occurs in SimpleStreets by placing a MR road, setting a maximum speed and observing.

Edit: I've just tried this and...it's a general problem. 1,5 km of straight 12m-SeeburgerWeg street, not many cars, a limit of 170kph and they don't overpass 80kph...maybe a programming bug?

There are several work arounds so that the bus can go over 88kph and not be stuck in traffic. Could work around it by making the left lane open up - less priority/less traffic. In fact, I am about to try that.

Problem is though (if you are suggesting what I think you are suggesting) the bus will overtake all the traffic, which will be sort of the opposite to the IRL feeling of being in a city bus on a motorway.

Nevertheless good luck and less us know how you get on!

Yea I know it was just one work around though, hopefully the developers would fix that 80 kph limit bug though. I wished that there was an official answer to this though to have the insurance that there isn't some form of error on our (the user) end though.

krtz07 schrieb:

aarongilp schrieb:

This is a thing I've noticed sometime ago, when I set in my map some kilometers of a motorway and later a 100kph-speed conventional road. In the motorway, where limit is set at 120 kph, cars go at 50-70 kph, but in the road, they travel at most 55 kph. This is a bit annoying when you have more than 50 km of roads and motorways, lowering a lot the average speed. I wanna try if that is a general issue or otherwise is only a problem that occurs in SimpleStreets by placing a MR road, setting a maximum speed and observing.

Edit: I've just tried this and...it's a general problem. 1,5 km of straight 12m-SeeburgerWeg street, not many cars, a limit of 170kph and they don't overpass 80kph...maybe a programming bug?

There are several work arounds so that the bus can go over 88kph and not be stuck in traffic. Could work around it by making the left lane open up - less priority/less traffic. In fact, I am about to try that.

Changing density (not priority) is not an option as they don't work correctly, only the Extremely low density makes effect. What I've done is that, setting an overall extremely low density (in all countryside roads, highways...) and well, making some overtaking when necessary and possible, but AI buses seem not to be as clever (or speedy, as you prefere) as me and they don't overtake or accelerate more than these 88 kmh, so in that case, or I arrive very very early, or they go very very late...so let's hope this bug will be fixed ASAP.