Expressways in Atarashima

The expressways of Atarashima are special roads that allow motorists to travel quickly from one urban area to another. All of them are dual carriageways with grade-separated access. They usually have three to four lanes in each direction, although there are two-lane or five-lane carriageways in some places.

Expressways in Atarashima generally radiate outwards from the E1F which acts as the major connector for all expressways. Currently the expressway system in Atarashima consists of 8 expressways within Atarashima, 3 of which are tollways and 1 expressway which crosses to Taiwan.

The original Expressway Blueprint for Atarashima consisted of the E1F, E2F and E5F to connect the major centres of the city. Gradually over years, the number of expressways has increased to allow an easier and less congested way of traveling in and around Atarashima. Studies about the feasibility of additional expressways are ongoing.

Features
There are no traffic lights on the expressways. At an interchange with another road, an expressway is connected to it via slip roads. This allows traffic to change routes without having to stop or slow down. Due to the need to conserve space in land-scarce Singapore, there are no cloverleaf interchanges on the entire island. Instead, traffic efficiency and land space are maximized by having traffic lights on terrestrial roads, as well as the usage of interchanges such as stack interchanges. The most common forms of highway-road or highway-highway intersections are single-point urban, diamond, and trumpet interchanges.

Safety
The default speed limit and National Speed Limits on Singapore expressways is 90km/h, but in certain areas a lower speed limit such as 80km/h or 70km/h is applied, especially in large urban areas, tunnels, heavy traffic and crosswinds. Speed traps are also deployed by the Singapore police at many places along the expressways.

Certain types of transport, such as pedestrians, bicycles, and learner drivers, are not allowed.

List of Expressways
The following expressways are using the new signage names which is currently being introduced until the end of 2012 as part of the Expressway + Tourist Project (E+TP)

Names and numbering
Atarashiman expressway naming is straightforward. Most expressways are named after the geographical regions and features, cities, towns and settlements along the way.

The Atarashiman expressway numbering system since 2012 consists of a letter, a number and another letter indicating whether it is Free or has a Toll for most expressways.


 * E signifies that it is an expressway, most expressways have an E at the front.
 * L is to signify 'link' and it is used after a letter for newer expressways like the Peninsula Link.
 * F/T is indicated in yellow and signifies whether it is Free or has a Toll
 * A is a special letter used only for expressways that cross the border like Harmony Tollway.



Eco Expressways
Eco Expressways is a type of expressway design which will need to be used for expressways that will be constructed from 2013. The major aim of the design is to build expressways in a valley-like form to reduce the noise pollution by aiming it at a different direction. Electronic signage must also have solar panels so it can be powered by solar power.