One method to induce a sensation of travelling at high speed is through the use of so called “psychological traffic calming” where road features and markings are used to create a heightened awareness of the need to slow down and/or of entry into a lower speed zone. An example of an entry treatment is the now widely used installation of a “gateway” at village or town entry as shown in Figure 6.5. One example is the study of Jamson et al. ( A major criterion used in the testing was the durability of the effect, i.e. a demonstration that it would work on repeated experience rather than wearing off after the initial encounter.