According to police, Mr Somaini, 54, from Switzerland, lost control and tumbled from his motorcycle in Thepkasattri Road, Phuket's main north-south artery, about 1.30pm near the Heroines Monument.
He had swerved to avoid a motorcycle entering the highway from the left without looking.
A woman sheltered him from the sun with am umbrella and trucks formed a barrier to protect him from passing traffic.
A disproportionate number of tourists and expats become road toll statistics.
With 2013 more than half over, Phuketwan is unable to provide any indication as to how many people have died and been injured on Phuket's roads.
In a change of police from April last year, Public Health on Phuket ceased issuing statistics about Phuket's road toll.
Before then, updates were issued each month, helping to alert people to the need for caution on Phuket's roads.
With no statistics being released, tourists and residents are unable to tell whether the road toll is rising or falling, and whether the safety battle is being won or lost.
What we can say with certainty is that Mr Somaini, recovering in Bangkok Hospital Phuket from his broken leg, will be among thousands who will be injured on Phuket's roads this year.