A driver under the influence crashed into the back of a police car in Lucerne.
Earlier this week, the police car stopped at a pedestrian crossing in Hochdorf when a following car failed to brake in time and crashed into the back.
A roadside drug test on the 42-year-old driver came back positive.
He was taken for further blood and urine tests, and his driving licence has been immediately suspended.
No one was injured.
Snow triggers chaos at the Gotthard Tunnel
Fuel prices up
Calls for stricter rules for cyclists and motorbikers
Geneva to pay wine growers not to grow
US diverting Swiss defence payments
Geneva and Jura may build a joint prison
