Modern life is often filled with long journeys - be it a daily trip to the office or a cross-country trek for a holiday. These journeys can be stressful and arduous at the best of times, but they can become even more so when you don't know how to get to your destination.

Featuring regularly-updated road maps, a satellite navigation system (or sat-nav) can eradicate the stress that travelling by car can so often bring.

Available from specialist car equipment retailers and stores specialising in electrical goods, such as Comet, sat-navs can be purchased for a good price - a price that looks especially reasonable when the cutting-edge technology available is taken into consideration.

A retailer that specialises in car equipment, Halfords offers one of the best ranges of sat-navs. Additionally, Halfords also offers storage cases, chargers and mounts.

But which sat-navs featured on the Halfords website are the best?

TomTom GO LIVE 820: A device that can be used right away - straight from the box - the TomTom GO LIVE 820 is capable of providing accurate directions and live traffic information, with coverage of the UK and the Republic of Ireland.

Its 4.3-inch touch screen displays maps and location information in a clear manner. Making those commutes much safer, the TomTom GO LIVE 820 - one of the many TomTom devices available - also features voice-control, allowing drivers to keep their attention firmly on the road.

The maps featured on this sat-nav are also more detailed than most - displaying a range of additional information, such as the phone numbers and opening times of local businesses.

A staple feature of the TomTom sat-navs, the latest map guarantee also ensures that drivers have access to the latest available maps before they begin their journey - making it a great option for those who don't make those lengthy journeys on a regular basis.

Garmin NUVI 30: Simple and compact, the Garmin NUVI 30 sat-nav provides all basic navigation features needed to see a driver on their way.

Regularly displaying accurate turn-by-turn directions, it also displays a speed limit indicator on most of the UK's major roads - ensuring that any needless or unwanted speeding fines or license points can be avoided.

Although one of the smaller offerings featured on the Halfords website, the NUVI 30 shouldn't be overlooked. Its lane assist function will ensure that drivers always know which lane they should be in, which is especially handy when navigating those unfamiliar junctions.

For those that prefer a bigger screen, the 4.3-inch Garmin NUVI 40 sat-nav is also available from Halfords.

Navman Tourer - Boasting a five-inch screen, the Navman Tourer is one of the biggest sat-navs featured on the website. Possessing the ability to provide a range of the best routes, drivers will always be able to find the route most suited to them.

Making use of information gathered from millions of drivers, its IQ Routes feature provides accurately optimised directions. This means that - regardless of the time of day - drivers will always have access to an optimal route.

The quick-spell keyboard featured on the Navman Tourer makes typing in a destination simple - allowing drivers to start their journey sooner rather than later.

Although this model of the Tourer only provides maps for the UK and Republic of Ireland, a model providing road maps for the rest of Europe can also be purchased from Halfords.

Sat-nav systems are an increasingly popular option for drivers that want the convenience of continuous, accurate directional information. This article looks at several of the best sat-nav systems available from car equipment retailer Halfords.