Just one in five commuter rail trains are running on some lines in Paris on Tuesday due to a strike over bonus pay for staff. For other lines, the service is less severely impacted, but many are only running during peak hours. The Transilien Paris regional network, a branch of France’s national railway company, has encouraged people to work from home or to find alternate transport for the working day, which follows Monday’s bank holiday. The SNCF is meeting with unions on Wednesday to try to reach an agreement. Train drivers are calling for bonus payments for working through the Olympic period…