Driving in the UK follows several basic rules: drive on the left side of the road; yield to traffic from the right at roundabouts unless otherwise marked; obey all traffic signals, signs, and give right of way to emergency vehicles; use of mobile phones while driving is illegal; seatbelts must be worn by all drivers and front seat passengers; and do not park in bus lanes or areas marked with yellow or red lines during restricted times. Additional motorway rules include passing on the right, not blocking the middle lane if the inside is clear, and a two hour time limit at most service stations.