The road sign and all kind information in Republika Srpska is on Cyrillic and on Serbian language. But road sings and interpretative maps are also and on English and on Latin.
Official internet sites City, organizations or institutions in Republika Srpska usually have a three options ЋИРИЛИЦА (CYRILLIC), LATINICA (LATIN) AND ENGLISH.
Many people here, especially young one and in urban-ish zones at least understand English so it could be helpful for visitors.
Yes, no public toilets in Banja Luka, but it can be found in bus and train station and it is cost around 0.25 euros.
On bus station is big and clean toilets. On train station is decent but my advice is to carry around some tissues with you, because may not be any toilet paper. It is also cost 0.25 euros. You can go in bars, cafes, big mall or even official buildings whatever you can go without fees. Usually, the toilets are divided for men and women. There is usually some kind of picture of female or male figurine or head and sometimes is sign for one plane shoe for man or one high heel for women.
And, there is a mobile plastic toilets that need pay some little amount (I think about 0.50 euros) and there can find on many places such as Park named Mladen Stojanovic and Kastel fortress especially during summer.
Monument to defenders on Banj brdo (Banj hill) was been neglect over time began to show signs of deterioration.
The stone path around the Monument it has some the ravage of time, so watch your step. One piece is moving on, so be careful.
On the monument is not to climb, there is a warning but, again, the Serbian Cyrillic alphabet. In any case, do not climb the monument. Great view of the city can be seen and experienced from the foot of the monument.
Beautiful come with price and it is fragile.
Here is another warning posting on Banj hill.
Some about preserving nature. Another warnings written in Serbian Cyrillic, I will translate for you.
On upper paper is written: "Warning! Do not make crime! Forbidden making an open fire! In case of fire call fire department - No. 123 or police - Br.122".
On lower paper is written: "forbidden to throw garbage".
Even is Balkan know from clear water, it is not safe drink from every source.
One of that source is tap on Banj hill in front of cafe on the top of the hill.
Still, warning is written in Serbian Cyrillic but picture worth 1000 words, right?!
Banja Luka have a three different places where you can get information about city, tourist offers for city and whole Republika Srpska.
Besides that there is on every corner bilingual city sign sign of touristic attractions and city institutions (on Serbian Cyrillic and English).
In the surroundings of Banja Luka there is various interpretative maps and market trails.
From Banja Luka to Sarajevo you have to use just one road.Name of the road is 5.Road 5.
I warn you please drive very slow (fastest 60km) and watch the sign labels .Road is very narrow.Road follows to Vrbas river one side is sometimes 300m or 900m cliff one side is rock.
There are some tunnels all of them are dark.No lights.Also one tunnel is I was nearly make accident cause when you enter the tunnel after 50m (very dark tunnel,you cant see anything) it turns 90 degree rigth.I do not know excatly where it is ,I think before the JAJCE.
Also if you are driving a local license plate car( Croatian,Bosnian,Serbian)Local drivers disturb you with horn .They tell you why you are driving with 60km speed)They drive the car very fast in that bad conditioned road.
Road surface is ok.But it is very busy road (Military Trucks,Cargo trucks).It is very curvery road.
Very dangerous road.I suggest you , do not drive from Banja Luka to Sarajevo.
Last thing From The Bosnia Border (I have entered from Bosanska Gradiska) Traffic signs turning in Cyrilic Letters.If you do not know cyrilic alphabets it is really diffucult to know where do you go.
Banja Luka is not typical European city.
It still widely touristic undiscover and exotic, so it is many warnings (non-English spoking and non-Latin writing area). There is not...