access road 
noun
A road giving access to a place or to another road.Matters are not helped by the fact that at weekends the northern ring road becomes solely an access road to Clifton Moor....
- I was out in front and I veered off the main road, taking an access road for a large warehouse.
- At present traffic is being diverted via the Lodge Road and a temporary access road.
- instrument panel
- insubordinate
- insubordinately
- insubordination
- in substance
- insubstantial
- insubstantiality
- insubstantially
- in succession
- in succession to
- insufferable
- insufferableness
- insufferably
- insufficiency
- insufficient
- insufficiently
- insufflate
- insufflation
- insufflator
- insula
- insulant
- insular
- insularity
- insularly
- insulate