All traffic that takes place by bicycle on public paths and roads.
example
Die Stadt investiert viel Geld in neue Radwege, um den Radverkehr zu fördern.
The city is investing a lot of money in new bike lanes to promote bicycle traffic.
Usage tips
Word composition
The word is made up of 'Rad' (short for 'Fahrrad', bicycle) and 'Verkehr' (traffic). So it literally describes the traffic created by bicycles.
EXAMPLE
In Amsterdam hat der Radverkehr einen hohen Stellenwert.
In Amsterdam, bicycle traffic has a high priority.
Word family with 'Rad-'
The prefix 'Rad-' is used for many words related to bicycles. When you see 'Rad-', think of a bicycle, e.g., in 'Radweg' (bike path), 'Radfahrer' (cyclist), or 'Radtour' (bike tour).
EXAMPLE
Ein guter Radweg ist sicher vom Autoverkehr getrennt.
A good bike path is safely separated from car traffic.
Register and use
'Radverkehr' (bicycle traffic) is a rather formal term that is often used in the news, urban planning, or official texts. Typical verbs are 'fördern' (to promote), 'stärken' (to strengthen), or 'regeln' (to regulate).
EXAMPLE
Die neue Brücke soll den Radverkehr entlasten.
The new bridge is intended to ease bicycle traffic.