Insurer, and Vehicle Excise Duty (VED) / licence data, are shared by the relevant authorities including the Police and this forms an integral part of the mechanism of CIE. All UK registered vehicles, including those that are exempt from VED (for example, Historic Vehicles and cars with low or zero emissions) are subject to the VED taxation application process. Part of this is a check on the vehicle's insurance. A physical receipt for the payment of VED was issued by way of a paper disc which, prior to 1 October 2014, meant that all motorists in the UK were required to prominently display the tax disc on their vehicle when it was kept or driven on public roads. This helped to ensure that most people had adequate insurance on their vehicles because insurance cover was required to purchase a disc, although the insurance must merely have been valid at the time of purchase and not necessarily for the life of the tax disc. To address the problems that arise where a vehicle's insurance was subsequently cancelled but the tax disc remained in force and displayed on the vehicle and the vehicle then used without insurance, the CIE regulations are now able to be applied as the Driver & Vehicle Licence Authority (DVLA) and the MID databases are shared in real-time meaning that a taxed but uninsured vehicle is easily detectable by both authorities and Traffic Police. From 1 October 2014, it is no longer a legal requirement to display a vehicle excise licence (tax disc) on a vehicle. This has come about because the whole VED process can now be administered electronically and alongside the MID, doing away with the expense, to the UK Government, of issuing paper discs.
Two of the most important factors that go into determining the underwriting risk on motorized vehicles are: performance capability and retail cost. The most commonly available providers of auto insurance have underwriting restrictions against vehicles that are either designed to be capable of higher speeds and performance levels, or vehicles that retail above a certain dollar amount. Vehicles that are commonly considered luxury automobiles usually carry more expensive physical damage premiums because they are more expensive to replace. Vehicles that can be classified as high performance autos will carry higher premiums generally because there is greater opportunity for risky driving behavior. Motorcycle insurance may carry lower property-damage premiums because the risk of damage to other vehicles is minimal, yet have higher liability or personal-injury premiums, because motorcycle riders face different physical risks while on the road. Risk classification on automobiles also takes into account the statistical analysis of reported theft, accidents, and mechanical malfunction on every given year, make, and model of auto.
The Progressive Corporation launched Snapshot to give drivers a customized insurance rate based on recording how, how much, and when their car is driven. Snapshot is currently available in 46 states plus the District of Columbia. Because insurance is regulated at the state level, Snapshot is currently not available in Alaska, California, Hawaii, and North Carolina. Driving data is transmitted to the company using an on-board telematic device. The device connects to a car's OnBoard Diagnostic (OBD-II) port (all petrol automobiles in the USA built after 1996 have an OBD-II.) and transmits speed, time of day and number of miles the car is driven. Cars that are driven less often, in less-risky ways, and at less-risky times of day, can receive large discounts. Progressive has received patents on its methods and systems of implementing usage-based insurance and has licensed these methods and systems to other companies.
The insurance certificate or cover note issued by the insurance company constitutes the only legal evidence that the policy to which the certificate relates satisfies the requirements of the relevant law applicable in Great Britain, Northern Ireland, the Isle of Man, the Island of Guernsey, the Island of Jersey and the Island of Alderney. The Act states that an authorised person, such as a police officer, may require a driver to produce an insurance certificate for inspection. If the driver cannot show the document immediately on request, and evidence of insurance cannot be found by other means such as the MID, then the Police are empowered to seize the vehicle instantly.
In South Australia, since July 2016, CTP is no longer provided by the Motor Accident Commission.The government has now licensed four private insurers - AAMI, Allianz, QBE and SGIC, to offer CTP insurance SA. The scheme allocates one provider for 3 years as part of vehicle registration. After July 2019, vehicle owners can choose a different CTP insurer and new insurers may also enter the market. 
Multi car insurance is designed for households with more than one car, and you can usually cover up to a maximum of five cars on one policy. You can think of it as a family car insurance policy, where each additional vehicle on the policy earns a further multi car discount from the insurer. While some insurers will only cover cars registered to the same address, the best multi car insurance policies will also allow you to cover cars driven by your immediate family, even if they live elsewhere.
In 1998, the Progressive Insurance company started a pilot program in Texas, in which drivers received a discount for installing a GPS-based device that tracked their driving behavior and reported the results via cellular phone to the company. The program was discontinued in 2000. In following years many policies (including Progressive) have been trialed and successfully introduced worldwide into what are referred to as Telematic Insurance. Such 'telematic' policies typically are based on black-box insurance technology, such devices derive from a stolen vehicle and fleet tracking but are used for insurance purposes. Since 2010 GPS-based and Telematic Insurance systems have become more mainstream in the auto insurance market not just aimed at specialised auto-fleet markets or high value vehicles (with an emphasis on stolen vehicle recovery). Modern GPS-based systems are branded as 'PAYD' Pay As You Drive insurance policies, 'PHYD' Pay How You Drive or since 2012 Smartphone auto insurance policies which utilise smartphones as a GPS sensor, e.g. . A detailed survey of the smartphone as measurement probe for insurance telematics is provided in 
As a practical matter, resetting odometers requires equipment plus expertise that makes stealing insurance risky and uneconomical. For example, to steal 20,000 miles [32,200 km] of continuous protection while paying for only the 2000 in the 35000 to 37000 range on the odometer, the resetting would have to be done at least nine times, to keep the odometer reading within the narrow 2,000-mile [3,200 km] covered range. There are also powerful legal deterrents to this way of stealing insurance protection. Odometers have always served as the measuring device for resale value, rental and leasing charges, warranty limits, mechanical breakdown insurance, and cents-per-mile tax deductions or reimbursements for business or government travel. Odometer tampering, detected during claim processing, voids the insurance and, under decades-old state and federal law, is punishable by heavy fines and jail.
Getting comparison insurance quotes is far different today than it used to be. Historically, it cost someone money to get a look at rates from a company. In their view, they were working to get you these auto insurance quote comparisons so they should be paid for this time, whether you go with a different company or not. Typically, a company would waive the quoting fee if you bought their plan.