Yellow lines can prevent all types of parking - both on the road or on verges and pavements but they can be expensive as there is a lengthy legal process before installation. To prevent cars parking on pavements and verges, physical deterrents can also be used. They cause an obstruction so cars can not pull onto pavements or verges.

Parking restrictions

Double yellow lines on road beside verge
Double yellow lines

Parking restrictions are used to prevent vehicles parking by the side of the road. Double yellow lines are the most common parking restriction used - they do not allow vehicles to wait at the side of the road at any time. However, loading or unloading from the vehicle is permitted, and setting down or picking passengers is also permitted. 

Single yellow lines and ‘School Keep Clear’ markings have different rules. There will be an upright sign with information about when vehicles are not allowed to park - this could exclude certain times of the day or weekdays for example.

Single yellow line parking restriction sign
Single yellow line parking restriction sign
'School Keep Clear' road marking
'School Keep Clear' road marking

Effectiveness

Double yellow lines are normally very effective at preventing vehicles parking where they are painted. In residential areas with many children, there is a large safety benefit in reducing the amount of cars parked on the street. Child pedestrians are less visible to car drivers because a line of parked cars hides the child from car drivers. However, parked cars narrow the road and reduces speeds as they act as temporary traffic calming.

Parking restrictions around junctions may be particularly useful, as this allows both the child and car drivers to see oncoming vehicles. 

Advantages

  • Prevent vehicles blocking access to homes or business by parking in front of entrances
  • Keep traffic flowing on roads which are not wide enough for parked vehicles and moving traffic
  • Assist child pedestrians to cross the road at junctions, where they may not be able to see over the top of cars
  • Discourages car use in central areas, which may help to ease congestion

Disadvantages

  • Installing parking restrictions with yellow lines requires a long legal process which involves consulting people and businesses in the surrounding area. This makes double yellow lines a very expensive measure
  • In residential areas, losing parking space may be an issue for people trying to park near their home
  • In areas near shops and other businesses, customers using their cars may not be able to park easily
  • Removing parking entirely can result in higher vehicle speeds

Alternatives

Access protection markings

White lines could be used to highlight the existence of a private access. White lines or "H-bars" do not require a legal process, so they are significantly cheaper and quicker to install.

To find out more about how to apply for an access protection marking, see our dropped kerb and access protection markings webpage.

Restrictions

  • Difficult to paint on cobbled streets / poor road surfaces
  • Cambridgeshire won't install yellow lines on private land unless the land owner requests it, and the Council is reimbursed
  • Compliance can be low if enforcement is unlikely
  • This scheme requires a Traffic Regulation Order

Cost of installation

Equipment = £500 - £7,500
Works = £500 - £2,500
Traffic Regulation Order = £1,000
Total cost = £2,000 - £11,000

Please note scheme costs vary based on the extent of the restrictions required.

Parking deterrants

Bollards

Wooden bollards
Wooden bollards
Metal bollards
Metal bollards

Advantages and disadvantages of bollards

  • Good deterrent
  • Different designs available
  • Can look unsightly
  • Can become a maintenance liability
  • Risk to visually impaired people

Cost of installation

Equipment = £150 - £550
Works = £100 - £350
Total cost = £250 - £900

Please note cost is per bollard and dependent on style and type.

Tree planting

Trees down centre of road

Advantages and disadvantages of tree planting

  • They can be sponsored by local organisations
  • Visually enhances the street
  • There could be issues with soil, roots, drainage and services
  • Leaf fall and rain can cause a slip hazard for pedestrians or cyclists
  • Long term maintenance required
  • Can block visibility from junctions
  • Requires a tree pit to stop root damage to the highway

Cost of installation

Tree cost = £250 - £1,500
Installation of tree pit = £5,000 - £15,000
Works = £1,000 - £10,000
Total cost = £6,250 - £26,500

Pavement parking ban

Sign reading "No parking at any time on verge or footway"

Advantages and disadvantages of pavement parking ban

  • Enforceable with a fine
  • Still permits parking in the road
  • Keeps all footway space reserved for footway users
  • Can be easily ignored by motorists
  • Requires enforcement patrol
  • Reguires a Traffic Regulation Order
  • May give the impression it is acceptable to park on other pavements

Cost of installation

Equipment = £2,000 - £5,000
Works = £1,000 - £3,000
Traffic Regulation Order = £1,000
Total cost = £4,000 - £9,000