A semi-trailer truck is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer attaches to the tractor with a fifth-wheel coupling (hitch), with much of its weight borne by the tractor. The result is that both the tractor and semi-trailer will have a distinctly different design than a rigid truck and trailer.
This article contains guidelines for road traffic in Denmark
Driving in the United Kingdom is governed by various legal powers and in some cases is subject to the passing of a driving test. The government produces a Highway Code that details the requirements for all road users, including drivers. Unlike most countries in the world, UK traffic drives on the left.
A road speed limit is the limit of speed allowed by law for road vehicles, usually the maximum speed allowed. Occasionally, there is a minimum speed limit. Speed limits are commonly set by the legislative bodies of national or local governments.
Road signs in Thailand are standardized road signs similar to those used in other nations but with certain differences. Until the early 1980s, Thailand closely followed US, Australian, and Japanese practices in road sign design, with diamond-shaped warning signs and circular restrictive signs to regulate traffic. Signs usually use the FHWA Series fonts typeface also used in the United States.
Road speed limits in the United Kingdom are used to define the maximum legal speed for vehicles using public roads in the UK, and are one of the measures available to attempt to control traffic speeds. The speed limit in each location is indicated on a nearby traffic sign or by the presence of street lighting. Signs show speed limits in miles per hour (mph) or use the Clearway symbol.
Road signs in the Czech Republic are regulated by the Ministry of Transport and the police. The signs are nearly the same as the European norm, but with small changes. The law governing the road signs is Decree number 30/2001 Sb., many times amended, and replaced by decree 294/2015 Sb., in force since 1 January 2016.
General speed limits in Germany are set by the federal government. All limits are multiples of 10 km/h. There are two default speed limits: 50 km/h (31 mph) inside built-up areas and 100 km/h (62 mph) outside built-up areas. While parts of the autobahns and many other freeway-style highways have posted limits up to 130 km/h (81 mph) based on accident experience, congestion and other factors, many rural sections have no general speed limit. The German Highway Code (Straßenverkehrsordnung) section on speed begins with the requirement which may be rendered in English:
Any person driving a vehicle may only drive so fast that the car is under control. Speeds must be adapted to the road, traffic, visibility and weather conditions as well as the personal skills and characteristics of the vehicle and load.
Speed limits in the Czech Republic vary depending on the type of road, and whether the road is within a settlement or not. The top speed limit is 130 km/h (81 mph) for motorways outside of settlements, whereas on regular roads within a settlement the speed limit is 50 km/h (31 mph). outside of the settlement and other than motorway the speed limit is 90 km/H. Various other special restrictions are applied for certain types and weight categories of vehicle.
The speed limit in localities is set at 50 km/h, but the owner of the road can apply for permission to raise it up to 80 km/h for automobiles and motorcycles or decrease it as low as 10 km/h for tramways and 30 km/h for automobiles. It is because of this that some city boulevards have a speed limit of 60 km/h, and some National Road stretches that pass through villages have a speed limit of 55 km/h.
Spain has different speed limits for every kind of road and vehicle. Until 1973, there were no speed limits on Spanish motorways, a generic limit of 130 km/h was instated then in order to save fuel during the 1973 energy crisis. It was lowered to 100 km/h to prevent accidents, but it was raised again in 1992, this time to 120 km/h. There have been proposals to raise the speed limit to 130 km/h, but have been rejected so far.
The default speed limits in the Netherlands are 50 km/h (31 mph) inside built-up areas, 80 km/h (50 mph) outside built-up areas, 100 km/h (62 mph) on expressways (autowegen), and 130 km/h (81 mph) on motorways (autosnelwegen). On September 1, 2012, the motorway default speed limit was raised from 120 km/h (75 mph) to 130 km/h (81 mph) , but it applies to only 48% of all motorways with the intent of 60% of motorways.
Norway has two general speed limits:
The speed limit for cars in Ukraine are as follows:
Speed limits in New Zealand are in kilometres per hour and range up to and including 110 km/h. New Zealand speed limits were in miles per hour (mph) until 1975, when the country metricated its road signage.
Four general speed limits apply on roads in Serbia:
The general speed limits in Albania are as follows:
As per Lithuanian traffic act § 15, the general maximum speed limits in Lithuania are:
Speed limits in Thailand are a set of maximum speeds applicable on any road in Thailand. For small cars that weigh less than 1,200 kg, the maximum limits within the built-up area and outside are 80 and 90 km/h respectively. The exception applies to motorways, in which small cars can use up to 120 km/h. Heavier cars, buses and trailer have more restrictive limits. Despite having the general maximum speed limits, the limits may be altered by a roadside sign.
