|materieel=[[Leyland]], [[Den Oudsten]], [[Volvo]]/[[Berkhof]], [[Mercedes-Benz O430]], [[Iveco]]/[[Berkhof]]
|lijnsoort=Streekbus
|frequentie_spits=2x/uur, 2-4x/uur tussen Leek(Tolbert)-Groningen
|frequentie_dal=1x/uur
|frequentie_avond=1x/uur
|frequentie_zaterdag=1x/uur
|frequentie_zondag=1x/uur
|frequentie_avond=1x/uur
}}
'''Lijn 81''' is was de opvolger van lijn 1 van de [[ESA]], en reed tussen [[Drachten_Busstation_NoordDrachten Busstation Noord|Drachten Busstation]] en [[Groningen|Groningen Busstation]] . In de middaguren waren er vanuit Drachten en Groningen tussenritten , die eindigden in Marumeindigden. 's Avonds reden de bussen allemaal via de route van [[Lijn 82 Groningen Autobusstation - Roden Centrum|Lijn 82 Groningen - Peizerwold - Peize - Roden]]
== Route ==
{{ RouteTop |
{{ RouteRij | {{Rimg|rer}}{{Rimg|0sBr}} | [[Drachten_Busstation_Noord|Drachten Busstation]]}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Drachten, Noorderbuurt}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsBr}} | [[Drachten_Van_Knobelsdorffplein|Drachten, van Knobelsdorffplein]]}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Drachten, Bertilla/Burg. Wuiteweg}}{{ RouteRij | {{Rimg|rerrsr}}{{Rimg|rsr}} | DrachtenDrachten, Ziekenhuis}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Drachten, Splitting}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Drachten, Zetveld}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Drachten, Vallaat}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, Selmien East}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, Tsjerkeleane}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, Skoalleane}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, Centrum}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, Mounleane}}{{ RouteRij | {{Rimg|rerrsr}}{{Rimg|rsr}} | UreterpUreterp, Boerestreek}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Ureterp, 't Tolhek}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Grinzerleane}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Binnenwei}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, De Mersken}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Boskwei}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Voorwerkersbrug}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Foarwurk}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Siegerswoude, Middenwei}}{{ RouteRij | {{Rimg|rerrsr}}{{Rimg|rsr}} | SiegerswoudeSiegerswoude, van Akenwei}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | De Wilp, Plantsoen}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | De Wilp, Vijver}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | De Wilp, Kerkhof}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, Wilpsterweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, ESA-garage}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, Kerklaan}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, Lindsterlaan}}{{ RouteRij | {{Rimg|rer}}{{BRimg|rrar}} | Marum, Raadhuisstraat}}{{ RouteRij | {{Rimg|rerrsr}}{{Rimg|rsrrs0}}{{Rimg|rs0}} | | Marum, Hotel Kruisweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, De Petten}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Marum, Zuiderhoekseweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Nuis, Nuis}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsrrsr}} | Nuis, Lietsweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Niebert, Hagedoornsweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Niebert, Molenweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Niebert, J.H. de Boerstraat}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Tolbert, Boerakkerweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsrrsr}} | Tolbert, 't Leege Land}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Tolbert, De Holm}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Tolbert, Tolbertervaart}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Tolbert, Tolbert}}{{ RouteRij | {{Rimg|0srrsr}}{{Rimg|rsr0sr}} | Tolbert, Huishoudschool}}{{ RouteRij | {{BRimg|ra0llrarr}} |Tolbert, De Beelen}}{{ RouteRij | {{Rimg|rerrsr}}| Leek, Lindensteinlaan}}{{ RouteRij | {{Rimg|rsr}} | TolbertLeek, De BeelenScholengeemschap}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Leek, LindensteinlaanEuroweg}}{{ RouteRij | {{Rimg|rerrsBr}}{{Rimg|rsr}} [[Leek_Busstation| Leek, ScholengeemschapAutobusstation]]}}{{ RouteRij | {{RimgBRimg|rer}}{{Rimg|rsrrrar}} | Leek, EurowegVVV-Kantoor}}{{ RouteRij | {{Rimg|rerrsr}}{{Rimg|rsBrrlr}} | [[Leek_Busstation|Leek, Autobusstation]]Westerheerdlaan}}{{ RouteRij | {{BRimgRimg|rsr}}{{Rimg|rralrlr}} | LeekMidwolde, VVV-KantoorNienoordstrand}}{{ RouteRij | {{Rimg|rlrrsr}}{{Rimg|rsrrlr}} | LeekMidwolde, WesterheerdlaanRijksweg}}{{ RouteRij | {{Rimg|rlr}}{{Rimg|rsr}} | MidwoldeNietap, NienoordstrandNietap}}{{ RouteRij | {{Rimg|rlr}}{{Rimg|rsr}} | MidwoldeNietap, RijkswegMeerweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | Nietap, NietapTurfweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | NietapRoden, MeerwegSporthal}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | NietapRoden, TurfwegLeeksterweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsBr}} | [[Roden Busstation| Roden, SporthalAutobusstation]]}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | Roden, LeeksterwegKastanjelaan}}{{ RouteRij | {{Rimg|rsBrrlr}}{{Rimg|rlrrsr}} | [[Roden Busstation|Roden, Autobusstation]]Oosteinde}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | Roden, KastanjelaanHandelsweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | RodenFoxwolde, OosteindeRoderwolderweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | RodenPeize, HandelswegMoleneind}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | FoxwoldePeize, RoderwolderwegRoderweg}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | Peize, MoleneindCentrum}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | Peize, RoderwegWolddijk}}{{ RouteRij | {{Rimg|rsrrlr}}{{Rimg|rlrrsr}} | PeizePeizerwold, CentrumPeizerwold}}{{ RouteRij | {{Rimg|rsr}}{{Rimg|rlr}} | Peize, Wolddijk}}{{ RouteRij | {{Rimg|rsr}}{{Rimg|rlr}} | PeizerwoldPeizermade, PeizerwoldStadspark}}{{ RouteRij | {{Rimg|rsr}}{{Rimg|rlr}} | Peizermade, Stadspark}}{{ RouteRij | {{Rimg|rsr}}{{Rimg|rlr}} | Peizermade, Peizermade}} {{ RouteRij | {{BRimg|rarlrarr}} | Peizerweg, Rijksweg ''(Alleen Uitstappenalleen uitstappen)''}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Boerhavelaan}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Overwinningsplein}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Paterswoldseweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Parkweg}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Emmaplein}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Gedempte Zuiderdiep}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsr}} | Groningen, Hereplein}}{{ RouteRij | {{Rimg|rer}}{{Rimg|rsrrsT0}} | [[Groningen|Groningen, CS/Busstation]]}}
}}