m Driving lane width: 3.50 m Pavement width: 2x10.25 m Parking lane: 3.00 m Middle separation area width: 3.60 m Parameters of a 2+2 lane dual carriageway in habitat (town/city) area: Total width of road: 24.10 m Driving lane width: 3.50 m Pavement width: 2x10.75 m Parking lane: 3.00 m Middle separation area width: 3.60 m There are also semi-motorways with only one side of the motorway built. After the missing lanes are built, they will become standard motorways. Ireland: HQDC A High-quality dual carriageway (HQDC) in Ireland is normally completed to a motorway standard, including no right-turns, but with no motorway restrictions. These are common on the final stretches of motorways nearing a major city, generally in order to enable use of bus stops and city bus services on the particular stretch of road. There are not yet any specific signs for this type of road, but the National Roads Authority have hinted that they are looking at implementing the German-style Autostrasse sign in Ireland. Speed limits are normally 100 km/h compared to 120 km/h on motorways Italy: Superstrada In Italy there are: Type B highway (or strada extraurbana principale), commonly but unofficially known as superstrada, is a divided highway with at least two lanes for each direction, paved shoulder on the right, no cross-traffic and no at-grade intersections. Access restrictions on such highways are exactly the same of Italian motorways (autostrade), as well as signage at the beginning and the end of the highway (with the only difference being the background color, blue instead of green). Speed limit on type-B road is 110 km/h. Type C highway (or strada extraurbana secondaria), a single carriageway with at least one lane for each direction and shoulders. It may have at-grade, at-level crossings with railways, roundabouts and traffic lights. This category contains also dual carriageways that can not be classified as type-B highways because of the lack of one or more required features. In absence of specific regulation signs, a type-C road is accessible by all vehicles and pedestrians, even if it has separate carriageways and no cross-traffic. The sign shown here on the left allows access only to motorized vehicles. Speed limit on type-C roads is 90 km/h. Netherlands: Autoweg The Netherlands has much more kilometres of motorways (snelwegen), than expressways (autowegen). The latter only form a complementary part of the country's main highway network. They are typically shorter than