Mouth ulcers are also a possible symptom of a viral infection that mainly affects young children, called hand, foot and mouth disease. Speak to your GP or call NHS 111 if you're unsure. Read about the symptoms of hand, foot and mouth disease.
It was not until 1965 that a national upper limit of 70mph was introduced for all roads, including motorways. Since 1977 the speed limit for cars and motorcycles on dual carriageways has been 70mph, with a 60mph speed limit on single carriageways.
The first maximum speed law for Mexico was created in 1903 by then president Porfirio DÃ­az. It established a maximum of 10 km/h (6 mph) for small and crowded streets, and 40 km/h (25 mph) elsewhere. Current speed limits are: 10 km/h (6 mph) in parking lots and residential areas; 60 km/h (37 mph) in streets with no speed limit 60â80 km/h (37â50 mph) on urban arterial roads (ejes, calzadas, beltways and freeways) 80 km/h (50 mph) in avenues with no speed limit