Ddeall y patrymau teithio presennol mewn ardal a pherfformiad y system drafnidiaeth; mae hyn yn helpu i nodi ac egluro problemauMonitro newidiadau i batrymau teithio dros amserRhagweld patrymau teithio ac amodau yn y dyfodol ar y rhwydwaith trafnidiaethAsesu effaith ymyriadau posibl i'r system drafnidiaeth yn gysonAsesu effaith newidiadau yn y defnydd o dir megis datblygiadau tai newydd a lleoliadau gwaith mewn dull cyson; mae hyn yn golygu bod modd profi effeithiolrwydd ac effeithlonrwydd mesurau arfaethedig i fodloni gofynion o ran trafnidiaeth.Rhoi y mewnbwn sydd ei angen i werthuso trafnidiaeth a datblygu achos busnesDarparu data sydd ei angen ar gyfer datblygu gwaith rheoli
Understand the current travel patterns in an area and the performance of the transport system; this assists in identifying and clarifying issuesMonitor changes in travel patterns over timePredict future travel patterns and conditions on the transport networkAssess the impacts of possible interventions in the transport system in a consistent mannerAssess the impacts of land use changes such as new housing developments and employment locations in a consistent manner; this enables the testing of the effectiveness and efficiency of proposed measures to meet their transport requirementsProvide inputs required for transport appraisals and business case developmentProvide data required for development control work