Many of us spend far too long on the M25 - stuck in daily delays - but how much have you learned about the so-called Road To Hell as you sit idling on its clogged carriageways?
See how much you really know about the M25 London Orbital with our 10-question multiple choice quiz. Simply jot your answers down then check at the end.
How much do you know about the M25. (Photo: Andreas Praefcke - Self-photographed, Public Domain)
M25 Quiz - can you beat The Road To Hell?
1.What is the total length of the M25 motorway that encircles London?
2.What is the speed limit on most sections of the M25?
3.Which of the following is not a junction on the M25?
4. The Bell Common Tunnel runs between which M25 junctions?
5. Which agency is responsible for the operation and maintenance of the M25 motorway?
6. In what year was the last section of the M25 motorway completed?
7. What is the name of the service station located at junction 23 of the M25?
a. South Mimms
b. Cobham
c. Clacket Lane
d. Thurrock
8.How many junctions are there on the M25?
9.Which junction on the M25 provides access to the M1 motorway?
10.Which of the following is not a service station on the M25?
Now check your M25 answers...
Score more than 7 and you're an M25 master... but maybe it's time to find another route before the orbital finally sends you loopy.
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Author: Pete Barden:
Twitter: @pete_barden
Pete Barden is a qualified journalist who has written and produced for publications including The Sun (thesun.co.uk), New Statesman Media Group, Whatcar? (Whatcar.com) Stuff Magazine (Stuff.tv), Fastcar Magazine (Fastcar.co.uk), Maxim Magazine and UK broadcast stations within the Heart network (Formerly GCAP). Pete specialises in motoring and travel content, along with news and production roles. You can find out more about Pete Barden on LinkedIn.