Singapore is an extremely safe city, in no small part because the justice in Singapore can be swift and harsh. This is especially important to note, because even relatively minor violations (such as spitting on the sidewalk) are considered fairly serious offenses. And there are fines issued for just about any offense including smoking in public places, jaywalking, littering and even chewing gum on the MRT.  

So when visiting Singapore it is important to note the laws. Penalties for drug offenses include the death penalty. Even shoplifting is considered a rather serious offense in Singapore, with penalties that include lengthy prison time. Corporal punishment may also be imposed for other lesser offenses.

It should be noted that homosexual acts are illegal in Singapore and penalties can also include imprisonment. It is noticeable that not all prostitutes are ladies but may include transsexuals or transvestites.

These harsh punishments make Singapore one of the safest large cities in the world to visit. Even when visiting alone a woman can generally feel comfortable, but as with any dark street at night caution should be observed.

The Singapore government has also stepped up security measures following the terrorist attacks in Bali, and remain quite committed to maintaining Singapore’s reputation as a safe destination for travelers.

Although Singapore is one of the safest countries in the world, please exercise caution and protection against your personal belongings. There are cases where people left their belongings (bags etc) and went for a swim (Sentosa) and later found their belongings missing. There have also been incidents of overseas pickpocket syndicates being caught in Singapore. They pickpocket in busy town areas and then go back to their countries.

Have someone to look after the belongings while you are away. Use lockers if they are available. Or ask friendly people to look after your belongings (at your own risk! they might be foreigners or dishonest Singaporeans too). Zip your handbag etc. Do not expose wallets or make belongings 'pickpocket-friendly'. These crimes are rather insignificant but its always good to be on your alert.

There's also cases where motorbikes passenger/driver will snatch bags etc from pedestrians  walking by the side of the road.

Overall, Singapore is still considered very safe compared to other parts of the Country.  This is especially so because there is the death penalty for murder cases and drug (heroine etc) trafficking/consumption.

In spite of all of this enforcement remember: a Low Crime Rate does not mean No Crime.