What do you do if you want to take your bikes on holiday? You can't exactly cycle there in most cases, but you'd like to cycle around once you get there. The answer is to simply attach your bikes to your car using a bike rack, and then drive them there. It's a lot easier than taking them on public transport, and cheaper than renting bikes once you get there.

Bike racks sit on top of your car, and can hold a surprising number of bikes - sometimes as many as five on one rack. They are very useful, yet generally inexpensive, and you can buy them at any good garage or DIY store. Don't worry too much about which model you get: as long as it can hold the number of bikes you need it to, it'll generally be just fine.

If you're going to fit a bike rack to your car, however, it is important to realise that it could potentially be a hazard not only to you and your car, but also to the other drivers on the road. For this reason, you need to make sure that the rack is secured to your car exactly as the instructions say and follow all the relevant safety regulations. If your rack seems unstable, you should take it to be fitted by a professional - don't take any risks.

By the same token, you should also realise that bikes that are badly secured to bike racks are very often stolen in car parks, as they are easy to take without people noticing. You should lock the bikes to the rack using a secure bike lock, such as a solid metal D-lock, and never leave them unattended without the lock on. This applies especially if you are taking valuable mountain bikes, as losing five of those at a time could be a real disaster.