Three people were hospitalised, said eThekwini metro police spokesman Superintendent Eugene Msomi.
A driver and his two assistants were injured when they tried to get away from striking drivers on Wednesday afternoon, said Msomi.
The driver tried to drive away from the protesters, but collided with a car before smashing into a tree.
He sustained serious head wounds, while his two assistants were lightly injured. The three were taken to St Augustine's Hospital.
Msomi said the strikers had converged on Pinetown after about 500 had earlier staged a peaceful march through the centre of Durban.
Isolated protest incidents were reported earlier in the morning in the city's harbour area and southern industrial areas prior to the march, but there were no arrests.
The pay strike by more than 20,000 workers in the freight transport sector continued on Wednesday. Unions reverted to a 12 percent pay demand after rejecting a lower offer by employers on Tuesday.
In Cape Town, striking truck drivers set alight two trucks in Nyanga, Cape Town police said.
"Two trucks have been burnt. One was a municipal truck and the other was delivering medicine," said Captain FC van Wyk.
Road Freight Employers' Association (RFEA) spokeswoman Magretia Brown-Engelbrecht said the situation had not changed since Wednesday morning, with no further meetings scheduled between unions and employers at this stage.
On Tuesday, workers rejected the RFEA's proposal of a staggered increase of 8.5 percent effective from March, and a further 0.5 percent from September next year.
The RFEA represents the labour interests of around 650 companies, from small operations to vast regional companies.
Workers in the sector embarked on a protected strike on Monday after wage negotiations deadlocked.
The four unions representing workers were the SA Transport and Allied Workers Union (Satawu), the Professional Transport and Allied Workers' Union SA (PTAWUSA), the Transport and Allied Workers' Union of SA (TAWU) and the Motor Transport Workers' Union (MTWU).
Earlier on Wednesday, Satawu spokesman Vincent Masoga said the union would step up the strike in the road freight transport sector in a bid to get the employers to the negotiating table.
Source: Sapa via I-NET Bridge
For more than two decades, I-Net Bridge has been one of South Africa’s preferred electronic providers of innovative solutions, data of the highest calibre, reliable platforms and excellent supporting systems. Our products include workstations, web applications and data feeds packaged with in-depth news and powerful analytical tools empowering clients to make meaningful decisions.
We pride ourselves on our wide variety of in-house skills, encompassing multiple platforms and applications. These skills enable us to not only function as a first class facility, but also design, implement and support all our client needs at a level that confirms I-Net Bridge a leader in its field.
Go to: http://www.inet.co.za
