Motorway D 1, road I/3 (from Brno, Bratislava, Wien,
Linz, České Budějovice, Tábor):
Leave D 1 at cross Krč with I/29, follow arrows
Smíchov, (or Plzeň), to the crossing with road I/4
(behind the bridge over Vltava river); then through the
Zlíchov, Mrázovka and Strahov tunnels to Patočkova
Street in Střešovice, then according to arrow
"Petřiny" ( see description
for more detailed map) .
Road I/4 (from Passau, Strakonice, Linz, České
Budějovice, Písek, Příbram):
After reaching the circular road No. III use it (along
the roads II/101(115)) to Radotín, then using II/599 in
direction Ruzyně up to crossing with road I/6, which to
use towards the center until you meet arrows left to
Petřiny.
Motorway D 5 (from Paris, Nürnberg, Pilsen):
Before entering Prague turn to circular road towards
Ruzyně, leave circular road at crossing with road I/6
towards centre, then follow arrows to Petřiny (see description of more detailed map)
Road I/6 (from Cheb, Karlovy Vary):
Leave the road as soon as you meet arrows left to
Petřiny shortly after joining tram rails (see description of more detailed map)
If you have not left this route in Teplice, you have to
leave it at Straškov, following road II/118 (former
I/30) to Slaného onto I/7
Road I/9 (from Rumburk, Česká Lípa, Mělník):
From Mělník, continue using roads I/16, II/608 and
II/101 to Kralupy nad Vltavou, then using road II/240 to
Prague.
Road II/240 (from Velvary):
After joining Evropská avenue (first street with tram)
continue only to the next crossing. You have to turn
right here and to follow arrows Petřiny to the
Institute.
Roads from eastern direction, this means I/10 (from
Harrachov, Liberec, Turnov, Mladá Boleslav), D 11 (from
Náchod, Hradec Králové, Poděbrady), I/12 (from
Kolín), I/2 (former II/333, from Kutná Hora):
Follow the arrows to Karlovy Vary, if going through city
centre to Střešovice or Vypich crossing, using circular
road to Řepy crossing with road I/6, then according to
arrow Petřiny ( see description
for more detailed map)