At Chevron we don’t currently have a Corporate or companywide policy that prohibits driving after a long haul flight. However, several of the operating companies within Chevron have rules or recommendations that do address certain practices when it comes to long haul flights and or driving outside the US. Below is an excerpt from one of the operating companies, and as far as enforcement goes they are just recommendations but if someone was to get in an accident after one of the below events took place it would be hard for them to explain why.
? Avoid driving outside of your home country, if possible.
? Avoid driving a vehicle after an international flight. Arrange to pick up your vehicle at the hotel or on the following day if you must drive.
? Avoid driving on company business after 16 hours of continuous work.
? Avoid driving after an overnight flight.