The UK’s Freight Transport Association says that even as much as a two-minute delay at Dover would would cause a 17-mile traffic jam. Raise that to four minutes? The queue—already moving twice as fast as the Swedish-Norwegian border—would extend from Dover to Maidstone, which is a distance of 40 miles.

The UK government may need a lot more Portaloos.

📬 Sign up for the Daily Brief

Our free, fast, and fun briefing on the global economy, delivered every weekday morning.