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 limit of 10 miles per hour, (16km/h), was introduced in the United Kingdom in 1861. In 1901 the State of Connecticut introduced the first United States state law regulating motor vehicles. The maximum speed limit in the cities was set at 12 mph and 15 mph outside the cities.