Add the dangers of using cellphones and iPads behind the wheel to the issues that keep business owners up at night.

A new survey from Canadian driver-monitoring software maker Aegis Mobility says that while company policies continue to become stricter, many executives are concerned that they are not well enforced.

According to Aegis’ third annual survey of 547 professionals, seven in 10 companies have clamped down on driving distractions, but only 32 percent of them say they believe policies are well followed.

“The year-over-year results of our survey show that fleet operators continue to recognize the serious risks associated with employee use of mobile phones while driving,” said Aegis Mobility CEO Paul Zimmerman.  “Further, the survey results show that employers lack confidence in current enforcement methods and seek technology solutions to automate compliance with mobile device use policies.”

A policy requiring hands-free cellphone use remains the most popular option, with 45 percent of companies making such a rule. But a broad prohibition on all in-car electronics use is also common: 41 percent mandate that calls are not answered behind the wheel, headset or not.

A number of companies are considering investing in software or even in-vehicle cameras to ensure employees focus on the road.

The survey also asked about the type of devices companies are giving their workers. Smartphones that use Google’s Android operating system or Apple’s iPhone are very popular: 61 percent of companies asked equip employees with Android or Apple products. Research in Motion’s BlackBerry has declined in popularity but still commands 30 percent of the market among those surveyed. Push-to-talk feature phones maintain some market share.

Tablet computers such as the iPad are surging in popularity. Twenty-seven percent of companies give drivers units for their jobs. An additional 8 percent said they plan to start using them this year.

The full survey results are available at http://info.aegismobility.com/2013-distracted-driving-survey-results/.